26 files changed, 125 insertions, 125 deletions

diff --git a/src/api/burn/balutil/balinfo.cpp b/src/api/burn/balutil/balinfo.cpp
index 6f609a40..8784a380 100644
--- a/src/api/burn/balutil/balinfo.cpp
+++ b/src/api/burn/balutil/balinfo.cpp
@@ -43,14 +43,14 @@ DAPI_(HRESULT) BalInfoParseCommandLine(
 
         if (argv[i][0] == L'-' || argv[i][0] == L'/')
         {
-            if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"norestart", -1))
+            if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"norestart", -1, TRUE))
             {
                 if (BAL_INFO_RESTART_UNKNOWN == pCommand->restart)
                 {
                     pCommand->restart = BAL_INFO_RESTART_NEVER;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"forcerestart", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"forcerestart", -1, TRUE))
             {
                 if (BAL_INFO_RESTART_UNKNOWN == pCommand->restart)
                 {
diff --git a/src/burn/engine/bundlepackageengine.cpp b/src/burn/engine/bundlepackageengine.cpp
index db433918..1a8ba982 100644
--- a/src/burn/engine/bundlepackageengine.cpp
+++ b/src/burn/engine/bundlepackageengine.cpp
@@ -686,7 +686,7 @@ static BUNDLE_QUERY_CALLBACK_RESULT CALLBACK QueryRelatedBundlesCallback(
     BOOTSTRAPPER_RELATION_TYPE relationType = RelatedBundleConvertRelationType(pBundle->relationType);
     BOOL fPerMachine = BUNDLE_INSTALL_CONTEXT_MACHINE == pBundle->installContext;
 
-    if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pBundle->wzBundleCode, -1, pPackage->Bundle.sczBundleCode, -1) &&
+    if (CSTR_EQUAL == ::CompareStringOrdinal(pBundle->wzBundleCode, -1, pPackage->Bundle.sczBundleCode, -1, TRUE) &&
         pPackage->Bundle.fWin64 == (REG_KEY_64BIT == pBundle->regBitness))
     {
         Assert(BOOTSTRAPPER_RELATION_UPGRADE == relationType);
diff --git a/src/burn/engine/cache.cpp b/src/burn/engine/cache.cpp
index e432df69..f5df6500 100644
--- a/src/burn/engine/cache.cpp
+++ b/src/burn/engine/cache.cpp
@@ -619,8 +619,8 @@ extern "C" HRESULT CacheGetLocalSourcePaths(
 
     hr = GetLastUsedSourceFolder(pVariables, &sczLastSourceFolder);
     fPreferSourcePathLocation = !pCache->fRunningFromCache || FAILED(hr);
-    fTryLastFolder = SUCCEEDED(hr) && sczLastSourceFolder && *sczLastSourceFolder && CSTR_EQUAL != ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pCache->sczSourceProcessFolder, -1, sczLastSourceFolder, -1);
-    fTryRelativePath = CSTR_EQUAL != ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, wzSourcePath, -1, wzRelativePath, -1);
+    fTryLastFolder = SUCCEEDED(hr) && sczLastSourceFolder && *sczLastSourceFolder && CSTR_EQUAL != ::CompareStringOrdinal(pCache->sczSourceProcessFolder, -1, sczLastSourceFolder, -1, TRUE);
+    fTryRelativePath = CSTR_EQUAL != ::CompareStringOrdinal(wzSourcePath, -1, wzRelativePath, -1, TRUE);
     fSourceIsAbsolute = PathIsRooted(wzSourcePath);
 
     // If the source path provided is a full path, try that first.
@@ -797,7 +797,7 @@ extern "C" HRESULT CacheSetLastUsedSource(
 
     // If the source path ends with the relative path then this source could be a new path.
     iSourceRelativePath = cchSourcePath - cchRelativePath;
-    if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, wzSourcePath + iSourceRelativePath, -1, wzRelativePath, -1))
+    if (CSTR_EQUAL == ::CompareStringOrdinal(wzSourcePath + iSourceRelativePath, -1, wzRelativePath, -1, TRUE))
     {
         hr = StrAllocString(&sczSourceFolder, wzSourcePath, iSourceRelativePath);
         ExitOnFailure(hr, "Failed to trim source folder.");
@@ -805,7 +805,7 @@ extern "C" HRESULT CacheSetLastUsedSource(
         hr = VariableGetString(pVariables, BURN_BUNDLE_LAST_USED_SOURCE, &sczLastSourceFolder);
         if (SUCCEEDED(hr))
         {
-            nCompare = ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, sczSourceFolder, -1, sczLastSourceFolder, -1);
+            nCompare = ::CompareStringOrdinal(sczSourceFolder, -1, sczLastSourceFolder, -1, TRUE);
         }
         else if (E_NOTFOUND == hr)
         {
@@ -1031,7 +1031,7 @@ extern "C" HRESULT CacheCompleteBundle(
     ExitOnFailure(hr, "Failed to combine completed path with engine file name.");
 
     // We can't just use wzExecutablePath because we needed to call CreateCompletedPath to ensure that the destination was secured.
-    Assert(CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, wzExecutablePath, -1, sczTargetPath, -1));
+    Assert(CSTR_EQUAL == ::CompareStringOrdinal(wzExecutablePath, -1, sczTargetPath, -1, TRUE));
 
     // If the bundle is running out of the package cache then we don't need to copy it there
     // (and don't want to since it'll be in use) so bail.
diff --git a/src/burn/engine/condition.cpp b/src/burn/engine/condition.cpp
index 8fa62f16..ecce2d5c 100644
--- a/src/burn/engine/condition.cpp
+++ b/src/burn/engine/condition.cpp
@@ -740,17 +740,17 @@ static HRESULT NextSymbol(
                     ::GetStringTypeW(CT_CTYPE1, &pContext->wzRead[n], 1, &charType);
                 } while (C1_ALPHA & charType || C1_DIGIT & charType || L'_' == pContext->wzRead[n]);
 
-                if (2 == n && CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pContext->wzRead, 2, L"OR", 2))
+                if (2 == n && CSTR_EQUAL == ::CompareStringOrdinal(pContext->wzRead, 2, L"OR", 2, TRUE))
                 {
                     // OR
                     pContext->NextSymbol.Type = BURN_SYMBOL_TYPE_OR;
                 }
-                else if (3 == n && CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pContext->wzRead, 3, L"AND", 3))
+                else if (3 == n && CSTR_EQUAL == ::CompareStringOrdinal(pContext->wzRead, 3, L"AND", 3, TRUE))
                 {
                     // AND
                     pContext->NextSymbol.Type = BURN_SYMBOL_TYPE_AND;
                 }
-                else if (3 == n && CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pContext->wzRead, 3, L"NOT", 3))
+                else if (3 == n && CSTR_EQUAL == ::CompareStringOrdinal(pContext->wzRead, 3, L"NOT", 3, TRUE))
                 {
                     // NOT
                     pContext->NextSymbol.Type = BURN_SYMBOL_TYPE_NOT;
diff --git a/src/burn/engine/core.cpp b/src/burn/engine/core.cpp
index b20f7f0c..de202321 100644
--- a/src/burn/engine/core.cpp
+++ b/src/burn/engine/core.cpp
@@ -1215,8 +1215,8 @@ HRESULT CoreAppendLogToCommandLine(
         if (rgszArgs[i][0] == L'-' || rgszArgs[i][0] == L'/')
         {
             // Now looking for 'log' or 'l'
-            if ((CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &rgszArgs[i][1], -1, L"log", -1))
-                || (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &rgszArgs[i][1], -1, L"l", -1)))
+            if ((CSTR_EQUAL == ::CompareStringOrdinal(&rgszArgs[i][1], -1, L"log", -1, TRUE))
+                || (CSTR_EQUAL == ::CompareStringOrdinal(&rgszArgs[i][1], -1, L"l", -1, TRUE)))
             {
                 ExitFunction1(hr = S_FALSE);
             }
@@ -1360,13 +1360,13 @@ extern "C" HRESULT CoreParseCommandLine(
 
         if (argv[i][0] == L'-' || argv[i][0] == L'/')
         {
-            if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"l", -1) ||
-                CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"log", -1) ||
-                CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"xlog", -1))
+            if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"l", -1, TRUE) ||
+                CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"log", -1, TRUE) ||
+                CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"xlog", -1, TRUE))
             {
                 pInternalCommand->dwLoggingAttributes &= ~BURN_LOGGING_ATTRIBUTE_APPEND;
 
-                if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], 1, L"x", 1))
+                if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], 1, L"x", 1, TRUE))
                 {
                     pInternalCommand->dwLoggingAttributes |= BURN_LOGGING_ATTRIBUTE_VERBOSE | BURN_LOGGING_ATTRIBUTE_EXTRADEBUG;
                 }
@@ -1382,24 +1382,24 @@ extern "C" HRESULT CoreParseCommandLine(
                 hr = PathExpand(&pInternalCommand->sczLogFile, argv[i], PATH_EXPAND_FULLPATH);
                 ExitOnFailure(hr, "Failed to copy log file path.");
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"?", -1) ||
-                     CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"h", -1) ||
-                     CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"help", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"?", -1, TRUE) ||
+                     CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"h", -1, TRUE) ||
+                     CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"help", -1, TRUE))
             {
                 pCommand->action = BOOTSTRAPPER_ACTION_HELP;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"q", -1) ||
-                     CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"quiet", -1) ||
-                     CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"s", -1) ||
-                     CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"silent", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"q", -1, TRUE) ||
+                     CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"quiet", -1, TRUE) ||
+                     CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"s", -1, TRUE) ||
+                     CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"silent", -1, TRUE))
             {
                 pCommand->display = BOOTSTRAPPER_DISPLAY_NONE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"passive", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"passive", -1, TRUE))
             {
                 pCommand->display = BOOTSTRAPPER_DISPLAY_PASSIVE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"layout", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"layout", -1, TRUE))
             {
                 if (BOOTSTRAPPER_ACTION_HELP != pCommand->action)
                 {
@@ -1415,47 +1415,47 @@ extern "C" HRESULT CoreParseCommandLine(
                     ExitOnFailure(hr, "Failed to copy path for layout directory.");
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"unsafeuninstall", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"unsafeuninstall", -1, TRUE))
             {
                 if (BOOTSTRAPPER_ACTION_HELP != pCommand->action)
                 {
                     pCommand->action = BOOTSTRAPPER_ACTION_UNSAFE_UNINSTALL;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"uninstall", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"uninstall", -1, TRUE))
             {
                 if (BOOTSTRAPPER_ACTION_HELP != pCommand->action)
                 {
                     pCommand->action = BOOTSTRAPPER_ACTION_UNINSTALL;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"repair", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"repair", -1, TRUE))
             {
                 if (BOOTSTRAPPER_ACTION_HELP != pCommand->action)
                 {
                     pCommand->action = BOOTSTRAPPER_ACTION_REPAIR;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"modify", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"modify", -1, TRUE))
             {
                 if (BOOTSTRAPPER_ACTION_HELP != pCommand->action)
                 {
                     pCommand->action = BOOTSTRAPPER_ACTION_MODIFY;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"package", -1) ||
-                     CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"update", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"package", -1, TRUE) ||
+                     CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"update", -1, TRUE))
             {
                 if (BOOTSTRAPPER_ACTION_UNKNOWN == pCommand->action)
                 {
                     pCommand->action = BOOTSTRAPPER_ACTION_INSTALL;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"noaupause", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"noaupause", -1, TRUE))
             {
                 pInternalCommand->automaticUpdates = BURN_AU_PAUSE_ACTION_NONE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"keepaupaused", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"keepaupaused", -1, TRUE))
             {
                 // Switch /noaupause takes precedence.
                 if (BURN_AU_PAUSE_ACTION_NONE != pInternalCommand->automaticUpdates)
@@ -1463,11 +1463,11 @@ extern "C" HRESULT CoreParseCommandLine(
                     pInternalCommand->automaticUpdates = BURN_AU_PAUSE_ACTION_IFELEVATED_NORESUME;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"disablesystemrestore", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"disablesystemrestore", -1, TRUE))
             {
                 pInternalCommand->fDisableSystemRestore = TRUE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"originalsource", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"originalsource", -1, TRUE))
             {
                 if (i + 1 >= argc)
                 {
@@ -1479,7 +1479,7 @@ extern "C" HRESULT CoreParseCommandLine(
                 hr = PathExpand(&pInternalCommand->sczOriginalSource, argv[i], PATH_EXPAND_FULLPATH);
                 ExitOnFailure(hr, "Failed to copy last used source.");
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_PARENT, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_PARENT, -1, TRUE))
             {
                 if (i + 1 >= argc)
                 {
@@ -1492,12 +1492,12 @@ extern "C" HRESULT CoreParseCommandLine(
                 hr = StrAllocString(&pInternalCommand->sczActiveParent, argv[i], 0);
                 ExitOnFailure(hr, "Failed to copy parent.");
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_PARENT_NONE, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_PARENT_NONE, -1, TRUE))
             {
                 hr = StrAllocString(&pInternalCommand->sczActiveParent, L"", 0);
                 ExitOnFailure(hr, "Failed to initialize parent to none.");
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_LOG_APPEND, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_LOG_APPEND, -1, TRUE))
             {
                 if (i + 1 >= argc)
                 {
@@ -1512,7 +1512,7 @@ extern "C" HRESULT CoreParseCommandLine(
 
                 pInternalCommand->dwLoggingAttributes |= BURN_LOGGING_ATTRIBUTE_APPEND;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_LOG_MODE), BURN_COMMANDLINE_SWITCH_LOG_MODE, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_LOG_MODE), BURN_COMMANDLINE_SWITCH_LOG_MODE, -1, TRUE))
             {
                 // Get a pointer to the next character after the switch.
                 LPCWSTR wzParam = &argv[i][2 + lstrlenW(BURN_COMMANDLINE_SWITCH_LOG_MODE)];
@@ -1541,7 +1541,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     }
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_ELEVATED, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_ELEVATED, -1, TRUE))
             {
                 if (i + 3 >= argc)
                 {
@@ -1579,7 +1579,7 @@ extern "C" HRESULT CoreParseCommandLine(
 
                 i += 2;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT), BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT, lstrlenW(BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT), BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT, lstrlenW(BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT), TRUE))
             {
                 // Get a pointer to the next character after the switch.
                 LPCWSTR wzParam = &argv[i][1 + lstrlenW(BURN_COMMANDLINE_SWITCH_SYSTEM_COMPONENT)];
@@ -1602,7 +1602,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     pInternalCommand->fArpSystemComponent = TRUE;
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_EMBEDDED, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_EMBEDDED, -1, TRUE))
             {
                 if (i + 3 >= argc)
                 {
@@ -1633,59 +1633,59 @@ extern "C" HRESULT CoreParseCommandLine(
 
                 i += 2;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_DETECT, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_DETECT, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_DETECT;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_UPGRADE, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_UPGRADE, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_UPGRADE;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_ADDON, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_ADDON, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_ADDON;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_DEPENDENT_ADDON, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_DEPENDENT_ADDON, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_DEPENDENT_ADDON;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_PATCH, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_PATCH, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_PATCH;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_DEPENDENT_PATCH, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_DEPENDENT_PATCH, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_DEPENDENT_PATCH;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_UPDATE, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_UPDATE, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_UPDATE;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_CHAIN_PACKAGE, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RELATED_CHAIN_PACKAGE, -1, TRUE))
             {
                 pCommand->relationType = BOOTSTRAPPER_RELATION_CHAIN_PACKAGE;
 
                 LogId(REPORT_STANDARD, MSG_BURN_RUN_BY_RELATED_BUNDLE, LoggingRelationTypeToString(pCommand->relationType));
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_PASSTHROUGH, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_PASSTHROUGH, -1, TRUE))
             {
                 pCommand->fPassthrough = TRUE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RUNONCE, -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, BURN_COMMANDLINE_SWITCH_RUNONCE, -1, TRUE))
             {
                 switch (pInternalCommand->mode)
                 {
@@ -1698,7 +1698,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     TraceLog(E_INVALIDARG, "Multiple mode command-line switches were provided.");
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES), BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES, lstrlenW(BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES), BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES, lstrlenW(BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES), TRUE))
             {
                 // Get a pointer to the next character after the switch.
                 LPCWSTR wzParam = &argv[i][1 + lstrlenW(BURN_COMMANDLINE_SWITCH_IGNOREDEPENDENCIES)];
@@ -1713,7 +1713,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     ExitOnFailure(hr, "Failed to allocate the list of dependencies to ignore.");
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_ANCESTORS), BURN_COMMANDLINE_SWITCH_ANCESTORS, lstrlenW(BURN_COMMANDLINE_SWITCH_ANCESTORS)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_ANCESTORS), BURN_COMMANDLINE_SWITCH_ANCESTORS, lstrlenW(BURN_COMMANDLINE_SWITCH_ANCESTORS), TRUE))
             {
                 // Get a pointer to the next character after the switch.
                 LPCWSTR wzParam = &argv[i][1 + lstrlenW(BURN_COMMANDLINE_SWITCH_ANCESTORS)];
@@ -1728,7 +1728,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     ExitOnFailure(hr, "Failed to allocate the list of ancestors.");
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY), BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY, lstrlenW(BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY), BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY, lstrlenW(BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY), TRUE))
             {
                 // Get a pointer to the next character after the switch.
                 LPCWSTR wzParam = &argv[i][1 + lstrlenW(BURN_COMMANDLINE_SWITCH_WORKING_DIRECTORY)];
@@ -1743,7 +1743,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     ExitOnFailure(hr, "Failed to store the custom working directory.");
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED), BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED, lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED), BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED, lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED), TRUE))
             {
                 LPCWSTR wzParam = &argv[i][2 + lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_ATTACHED)];
                 if (L'=' != wzParam[-1] || L'\0' == wzParam[0])
@@ -1765,7 +1765,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     }
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF), BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF, lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF), BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF, lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF), TRUE))
             {
                 LPCWSTR wzParam = &argv[i][2 + lstrlenW(BURN_COMMANDLINE_SWITCH_FILEHANDLE_SELF)];
                 if (L'=' != wzParam[-1] || L'\0' == wzParam[0])
@@ -1787,7 +1787,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     }
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN), BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN, lstrlenW(BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN), BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN, lstrlenW(BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN), TRUE))
             {
                 LPCWSTR wzParam = &argv[i][2 + lstrlenW(BURN_COMMANDLINE_SWITCH_SPLASH_SCREEN)];
                 if (L'=' != wzParam[-1] || L'\0' == wzParam[0])
@@ -1809,7 +1809,7 @@ extern "C" HRESULT CoreParseCommandLine(
                     }
                 }
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_PREFIX), BURN_COMMANDLINE_SWITCH_PREFIX, lstrlenW(BURN_COMMANDLINE_SWITCH_PREFIX)))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], lstrlenW(BURN_COMMANDLINE_SWITCH_PREFIX), BURN_COMMANDLINE_SWITCH_PREFIX, lstrlenW(BURN_COMMANDLINE_SWITCH_PREFIX), TRUE))
             {
                 // Skip (but log) any other private burn switches we don't recognize, so that
                 // adding future private variables doesn't break old bundles
diff --git a/src/burn/engine/dependency.cpp b/src/burn/engine/dependency.cpp
index f398a070..767d5004 100644
--- a/src/burn/engine/dependency.cpp
+++ b/src/burn/engine/dependency.cpp
@@ -263,7 +263,7 @@ extern "C" HRESULT DependencyDetectProviderKeyBundleCode(
         hr = StrAllocString(&pRegistration->sczDetectedProviderKeyBundleCode, pRegistration->sczProviderKey, 0);
         ExitOnFailure(hr, "Failed to initialize provider key bundle code.");
     }
-    else if (CSTR_EQUAL != ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pRegistration->sczCode, -1, pRegistration->sczDetectedProviderKeyBundleCode, -1))
+    else if (CSTR_EQUAL != ::CompareStringOrdinal(pRegistration->sczCode, -1, pRegistration->sczDetectedProviderKeyBundleCode, -1, TRUE))
     {
         pRegistration->fDetectedForeignProviderKeyBundleCode = TRUE;
         LogId(REPORT_STANDARD, MSG_DETECTED_FOREIGN_BUNDLE_PROVIDER_REGISTRATION, pRegistration->sczProviderKey, pRegistration->sczDetectedProviderKeyBundleCode);
@@ -293,12 +293,12 @@ extern "C" HRESULT DependencyDetectBundle(
         {
             DEPENDENCY* pDependent = pRegistration->rgDependents + i;
 
-            if (pDependencies->fActiveParent && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pDependencies->wzActiveParent, -1, pDependent->sczKey, -1))
+            if (pDependencies->fActiveParent && CSTR_EQUAL == ::CompareStringOrdinal(pDependencies->wzActiveParent, -1, pDependent->sczKey, -1, TRUE))
             {
                 pRegistration->fParentRegisteredAsDependent = TRUE;
             }
 
-            if (pDependencies->fSelfDependent && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pDependencies->wzSelfDependent, -1, pDependent->sczKey, -1))
+            if (pDependencies->fSelfDependent && CSTR_EQUAL == ::CompareStringOrdinal(pDependencies->wzSelfDependent, -1, pDependent->sczKey, -1, TRUE))
             {
                 pRegistration->fSelfRegisteredAsDependent = TRUE;
             }
@@ -905,7 +905,7 @@ extern "C" HRESULT DependencyDetectCompatibleEntry(
                 continue;
             }
         }
-        else if (sczId && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, wzPackageProviderId, -1, sczId, -1))
+        else if (sczId && CSTR_EQUAL == ::CompareStringOrdinal(wzPackageProviderId, -1, sczId, -1, TRUE))
         {
             continue;
         }
@@ -969,7 +969,7 @@ static HRESULT DetectPackageDependents(
         {
             DEPENDENCY* pDependent = pProvider->rgDependents + iDependent;
 
-            if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pRegistration->sczCode, -1, pDependent->sczKey, -1))
+            if (CSTR_EQUAL == ::CompareStringOrdinal(pRegistration->sczCode, -1, pDependent->sczKey, -1, TRUE))
             {
                 pProvider->fBundleRegisteredAsDependent = TRUE;
                 fBundleRegisteredAsDependent = TRUE;
@@ -1043,7 +1043,7 @@ static HRESULT SplitIgnoreDependencies(
             hr = DictAddKey(sdIgnoreDependencies, wzToken);
             ExitOnFailure(hr, "Failed to add \"%ls\" to the string dictionary.", wzToken);
 
-            if (!*pfIgnoreAll && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, L"ALL", -1, wzToken, -1))
+            if (!*pfIgnoreAll && CSTR_EQUAL == ::CompareStringOrdinal(L"ALL", -1, wzToken, -1, TRUE))
             {
                 *pfIgnoreAll = TRUE;
             }
diff --git a/src/burn/engine/detect.cpp b/src/burn/engine/detect.cpp
index 08f6b57c..c19d382c 100644
--- a/src/burn/engine/detect.cpp
+++ b/src/burn/engine/detect.cpp
@@ -130,7 +130,7 @@ extern "C" HRESULT DetectForwardCompatibleBundles(
             BURN_RELATED_BUNDLE* pRelatedBundle = pRegistration->relatedBundles.rgRelatedBundles + iRelatedBundle;
 
             if (BOOTSTRAPPER_RELATION_UPGRADE == pRelatedBundle->detectRelationType &&
-                CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pRegistration->sczDetectedProviderKeyBundleCode, -1, pRelatedBundle->package.sczId, -1))
+                CSTR_EQUAL == ::CompareStringOrdinal(pRegistration->sczDetectedProviderKeyBundleCode, -1, pRelatedBundle->package.sczId, -1, TRUE))
             {
                 hr = VerCompareParsedVersions(pRegistration->pVersion, pRelatedBundle->pVersion, &nCompareResult);
                 ExitOnFailure(hr, "Failed to compare bundle version '%ls' to related bundle version '%ls'", pRegistration->pVersion->sczVersion, pRelatedBundle->pVersion->sczVersion);
diff --git a/src/burn/engine/elevation.cpp b/src/burn/engine/elevation.cpp
index f208efc9..aff05ae3 100644
--- a/src/burn/engine/elevation.cpp
+++ b/src/burn/engine/elevation.cpp
@@ -3380,7 +3380,7 @@ static HRESULT OnUninstallMsiCompatiblePackage(
     }
 
     if (!sczCompatiblePackageId || !*sczCompatiblePackageId ||
-        CSTR_EQUAL != ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pCompatiblePackage->compatibleEntry.sczId, -1, sczCompatiblePackageId, -1))
+        CSTR_EQUAL != ::CompareStringOrdinal(pCompatiblePackage->compatibleEntry.sczId, -1, sczCompatiblePackageId, -1, TRUE))
     {
         ExitWithRootFailure(hr, E_INVALIDARG, "Package '%ls' has no compatible package with id: %ls", sczPackageId, sczCompatiblePackageId);
     }
@@ -3792,7 +3792,7 @@ static HRESULT OnCleanCompatiblePackage(
     }
 
     if (!sczCompatiblePackageId || !*sczCompatiblePackageId ||
-        CSTR_EQUAL != ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pCompatiblePackage->compatibleEntry.sczId, -1, sczCompatiblePackageId, -1))
+        CSTR_EQUAL != ::CompareStringOrdinal(pCompatiblePackage->compatibleEntry.sczId, -1, sczCompatiblePackageId, -1, TRUE))
     {
         ExitWithRootFailure(hr, E_INVALIDARG, "Package '%ls' has no compatible package with id: %ls", sczPackageId, sczCompatiblePackageId);
     }
diff --git a/src/burn/engine/msiengine.cpp b/src/burn/engine/msiengine.cpp
index d5268b17..86fb0d9d 100644
--- a/src/burn/engine/msiengine.cpp
+++ b/src/burn/engine/msiengine.cpp
@@ -523,7 +523,7 @@ extern "C" HRESULT MsiEngineDetectPackage(
             ExitOnFailure(hr, "Failed to enum related products.");
 
             // If we found ourselves, skip because saying that a package is related to itself is nonsensical.
-            if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pPackage->Msi.sczProductCode, -1, wzProductCode, -1))
+            if (CSTR_EQUAL == ::CompareStringOrdinal(pPackage->Msi.sczProductCode, -1, wzProductCode, -1, TRUE))
             {
                 continue;
             }
@@ -631,7 +631,7 @@ extern "C" HRESULT MsiEngineDetectPackage(
                 }
                 // It can't be a downgrade if the upgrade codes aren't the same.
                 else if (BOOTSTRAPPER_PACKAGE_STATE_ABSENT == pPackage->currentState &&
-                         pPackage->Msi.sczUpgradeCode && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pPackage->Msi.sczUpgradeCode, -1, pRelatedMsi->sczUpgradeCode, -1))
+                         pPackage->Msi.sczUpgradeCode && CSTR_EQUAL == ::CompareStringOrdinal(pPackage->Msi.sczUpgradeCode, -1, pRelatedMsi->sczUpgradeCode, -1, TRUE))
                 {
                     relatedMsiOperation = BOOTSTRAPPER_RELATED_OPERATION_DOWNGRADE;
                     pPackage->Msi.operation = BOOTSTRAPPER_RELATED_OPERATION_DOWNGRADE;
diff --git a/src/burn/engine/relatedbundle.cpp b/src/burn/engine/relatedbundle.cpp
index 938b24d7..d426dc53 100644
--- a/src/burn/engine/relatedbundle.cpp
+++ b/src/burn/engine/relatedbundle.cpp
@@ -206,7 +206,7 @@ static __callback int __cdecl CompareRelatedBundlesDetect(
         VerCompareParsedVersions(pBundleLeft->pVersion, pBundleRight->pVersion, &ret);
         if (0 == ret)
         {
-            ret = ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pBundleLeft->package.sczId, -1, pBundleRight->package.sczId, -1) - 2;
+            ret = ::CompareStringOrdinal(pBundleLeft->package.sczId, -1, pBundleRight->package.sczId, -1, TRUE) - 2;
         }
     }
 
@@ -249,7 +249,7 @@ static __callback int __cdecl CompareRelatedBundlesPlan(
         VerCompareParsedVersions(pBundleLeft->pVersion, pBundleRight->pVersion, &ret);
         if (0 == ret)
         {
-            ret = ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pBundleLeft->package.sczId, -1, pBundleRight->package.sczId, -1) - 2;
+            ret = ::CompareStringOrdinal(pBundleLeft->package.sczId, -1, pBundleRight->package.sczId, -1, TRUE) - 2;
         }
     }
 
@@ -284,7 +284,7 @@ static HRESULT LoadIfRelatedBundle(
     BURN_RELATED_BUNDLE* pRelatedBundle = NULL;
 
     // If we found our bundle code, it's not a related bundle.
-    if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pBundle->wzBundleCode, -1, pRegistration->sczCode, -1))
+    if (CSTR_EQUAL == ::CompareStringOrdinal(pBundle->wzBundleCode, -1, pRegistration->sczCode, -1, TRUE))
     {
         ExitFunction1(hr = S_FALSE);
     }
diff --git a/src/burn/engine/variable.cpp b/src/burn/engine/variable.cpp
index 9d0aec52..dc59916a 100644
--- a/src/burn/engine/variable.cpp
+++ b/src/burn/engine/variable.cpp
@@ -1144,7 +1144,7 @@ extern "C" BOOL VariableIsHiddenCommandLine(
     {
         pVariable = pVariables->rgVariables + i;
 
-        if (pVariable->fHidden && CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pVariable->sczName, -1, wzVariable, -1))
+        if (pVariable->fHidden && CSTR_EQUAL == ::CompareStringOrdinal(pVariable->sczName, -1, wzVariable, -1, TRUE))
         {
             fHidden = TRUE;
             break;
diff --git a/src/burn/test/BurnUnitTest/PlanTest.cpp b/src/burn/test/BurnUnitTest/PlanTest.cpp
index 25a0cb35..e2850a62 100644
--- a/src/burn/test/BurnUnitTest/PlanTest.cpp
+++ b/src/burn/test/BurnUnitTest/PlanTest.cpp
@@ -3161,12 +3161,12 @@ namespace Bootstrapper
 
             if (pDependencies->fSelfDependent || pDependencies->fActiveParent)
             {
-                if (pDependencies->fActiveParent && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pDependencies->wzActiveParent, -1, wzId, -1))
+                if (pDependencies->fActiveParent && CSTR_EQUAL == ::CompareStringOrdinal(pDependencies->wzActiveParent, -1, wzId, -1, TRUE))
                 {
                     pRegistration->fParentRegisteredAsDependent = TRUE;
                 }
 
-                if (pDependencies->fSelfDependent && CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pDependencies->wzSelfDependent, -1, wzId, -1))
+                if (pDependencies->fSelfDependent && CSTR_EQUAL == ::CompareStringOrdinal(pDependencies->wzSelfDependent, -1, wzId, -1, TRUE))
                 {
                     pRegistration->fSelfRegisteredAsDependent = TRUE;
                 }
diff --git a/src/ext/Bal/stdbas/WixStandardBootstrapperApplication.cpp b/src/ext/Bal/stdbas/WixStandardBootstrapperApplication.cpp
index 59b2d8de..9ddab7c0 100644
--- a/src/ext/Bal/stdbas/WixStandardBootstrapperApplication.cpp
+++ b/src/ext/Bal/stdbas/WixStandardBootstrapperApplication.cpp
@@ -2928,7 +2928,7 @@ private:
 
                 if (argv[i][0] == L'-' || argv[i][0] == L'/')
                 {
-                    if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"lang", -1))
+                    if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"lang", -1, TRUE))
                     {
                         if (i + 1 >= argc)
                         {
@@ -2941,7 +2941,7 @@ private:
                         hr = StrAllocString(psczLanguage, &argv[i][0], 0);
                         BalExitOnFailure(hr, "Failed to copy language.");
                     }
-                    else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"cache", -1))
+                    else if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"cache", -1, TRUE))
                     {
                         m_fRequestedCacheOnly = TRUE;
                     }
diff --git a/src/ext/Bal/test/examples/TestEngine/ExampleTestEngine.cpp b/src/ext/Bal/test/examples/TestEngine/ExampleTestEngine.cpp
index fc1938fe..9ad4e91f 100644
--- a/src/ext/Bal/test/examples/TestEngine/ExampleTestEngine.cpp
+++ b/src/ext/Bal/test/examples/TestEngine/ExampleTestEngine.cpp
@@ -19,15 +19,15 @@ int __cdecl wmain(int argc, LPWSTR argv[])
     {
         fShowUsage = TRUE;
     }
-    else if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"reload", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"reload", -1, TRUE))
     {
         hr = RunReloadEngine(argv[2], argv[3]);
     }
-    else if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"shutdown", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"shutdown", -1, TRUE))
     {
         hr = RunShutdownEngine(argv[2], argv[3]);
     }
-    else if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"waitforquit", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"waitforquit", -1, TRUE))
     {
         hr = RunWaitForQuitEngine(argv[2], argv[3]);
     }
diff --git a/src/ext/Iis/ca/scaapppool.cpp b/src/ext/Iis/ca/scaapppool.cpp
index 781c55ca..951f2d4b 100644
--- a/src/ext/Iis/ca/scaapppool.cpp
+++ b/src/ext/Iis/ca/scaapppool.cpp
@@ -80,7 +80,7 @@ HRESULT ScaAppPoolRead(
         WcaLog(LOGMSG_VERBOSE, "Skipping ScaAppPoolRead() - required table not present");
         ExitFunction1(hr = S_FALSE);
     }
-    
+
     hr = WcaBeginUnwrapQuery(&hComponentQuery, ppwzCustomActionData);
     ExitOnFailure(hr, "Failed to unwrap query for ScaAppPoolRead");
 
@@ -478,17 +478,17 @@ HRESULT ScaWriteAppPool(
     }
     else if (psap->iAttributes & APATTR_OTHERUSER)
     {
-        if (!*psap->suUser.wzDomain || CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzDomain, -1, L".", -1))
+        if (!*psap->suUser.wzDomain || CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzDomain, -1, L".", -1, TRUE))
         {
-            if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzName, -1, L"NetworkService", -1))
+            if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzName, -1, L"NetworkService", -1, TRUE))
             {
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_NETWORKSERVICE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzName, -1, L"LocalService", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzName, -1, L"LocalService", -1, TRUE))
             {
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_LOCALSERVICE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzName, -1, L"LocalSystem", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzName, -1, L"LocalSystem", -1, TRUE))
             {
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_LOCALSYSTEM;
             }
@@ -497,17 +497,17 @@ HRESULT ScaWriteAppPool(
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_SPECIFICUSER;
             }
         }
-        else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzDomain, -1, L"NT AUTHORITY", -1))
+        else if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzDomain, -1, L"NT AUTHORITY", -1, TRUE))
         {
-            if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzName, -1, L"NETWORK SERVICE", -1))
+            if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzName, -1, L"NETWORK SERVICE", -1, TRUE))
             {
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_NETWORKSERVICE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzName, -1, L"SERVICE", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzName, -1, L"SERVICE", -1, TRUE))
             {
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_LOCALSERVICE;
             }
-            else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, psap->suUser.wzName, -1, L"SYSTEM", -1))
+            else if (CSTR_EQUAL == ::CompareStringOrdinal(psap->suUser.wzName, -1, L"SYSTEM", -1, TRUE))
             {
                 dwIdentity = MD_APPPOOL_IDENTITY_TYPE_LOCALSYSTEM;
             }
diff --git a/src/ext/Iis/ca/scaexecIIS7.cpp b/src/ext/Iis/ca/scaexecIIS7.cpp
index 108007a1..52378d34 100644
--- a/src/ext/Iis/ca/scaexecIIS7.cpp
+++ b/src/ext/Iis/ca/scaexecIIS7.cpp
@@ -566,7 +566,7 @@ HRESULT IIS7AspProperty(
     //
     //Do not append trailing '/' for default vDir
     //
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzPathName, -1, L"/", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzPathName, -1, L"/", -1, TRUE))
     {
         hr = StrAllocConcat(&pwzLocationPath, L"/", 0);
         ExitOnFailure(hr, "failed to copy location WebDir '/'");
@@ -742,7 +742,7 @@ HRESULT IIS7WebDir(
             //
             //Do not append trailing '/' for default vDir
             //
-            if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzPathName, -1, L"/", -1))
+            if (CSTR_EQUAL != ::CompareStringOrdinal(pwzPathName, -1, L"/", -1, TRUE))
             {
                 hr = StrAllocConcat(&pwzLocationPath, L"/", 0);
                 ExitOnFailure(hr, "failed to copy location WebDir '/'");
@@ -998,7 +998,7 @@ HRESULT IIS7WebError(
     hr = StrAllocFormatted(&pwzConfigPath, L"%s/%s", IIS_CONFIG_APPHOST_ROOT, pwzSiteName);
     ExitOnFailure(hr, "failed to format web error config path");
 
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzAppName, -1, L"/", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzAppName, -1, L"/", -1, TRUE))
     {
         hr = StrAllocConcat(&pwzConfigPath, L"/", 0);
         ExitOnFailure(hr, "failed to copy web error config path delim");
@@ -1325,7 +1325,7 @@ HRESULT IIS7HttpHeader(
     hr = StrAllocFormatted(&pwzConfigPath, L"%s/%s", IIS_CONFIG_APPHOST_ROOT, pwzSiteName);
     ExitOnFailure(hr, "failed to format web error config path");
 
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzAppName, -1, L"/", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzAppName, -1, L"/", -1, TRUE))
     {
         hr = StrAllocConcat(&pwzConfigPath, L"/", 0);
         ExitOnFailure(hr, "failed to copy web error config path delim");
@@ -2340,7 +2340,7 @@ HRESULT IIS7AppExtension(
     //
     //Do not append trailing '/' for default vDir
     //
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzWebRoot, -1, L"/", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzWebRoot, -1, L"/", -1, TRUE))
     {
         hr = StrAllocConcat(&pwzConfigPath, L"/", 0);
         ExitOnFailure(hr, "failed to copy appext config path delim");
@@ -2495,7 +2495,7 @@ LExit:
     //
     //Do not append trailing '/' for default vDir
     //
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzWebRoot, -1, L"/", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzWebRoot, -1, L"/", -1, TRUE))
     {
         hr = StrAllocConcat(&pwzConfigPath, L"/", 0);
         ExitOnFailure(hr, "failed to copy appext config path delim");
@@ -2627,7 +2627,7 @@ HRESULT IIS7DirProperties(
     //
     //Do not append trailing '/' for default vDir
     //
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzWebRoot, -1, L"/", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzWebRoot, -1, L"/", -1, TRUE))
     {
         hr = StrAllocConcat(&pwzConfigPath, L"/", 0);
         ExitOnFailure(hr, "failed to copy appext config path delim");
@@ -3337,7 +3337,7 @@ static HRESULT CreateWebLog(
     ExitOnFailure(hr, "Failed get logfile element");
     ReleaseVariant(vtProp);
 
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pwzFormat, -1, L"none", -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pwzFormat, -1, L"none", -1, TRUE))
     {
         hr = Iis7PutPropertyString(pLogFile, IIS_CONFIG_LOGFORMAT, pwzFormat);
         ExitOnFailure(hr, "Failed set logfile format property");
@@ -4118,7 +4118,7 @@ static HRESULT ClearLocationTag(
         ExitOnFailure(hr, "Failed to get IIS location collection count");
 
         hr = pLocation->get_Path(&bstrLocationPath);
-        if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, swLocationPath, -1, bstrLocationPath, -1))
+        if (CSTR_EQUAL == ::CompareStringOrdinal(swLocationPath, -1, bstrLocationPath, -1, TRUE))
         {
             hr = pLocationCollection->DeleteLocation(vtIndex);
             ExitOnFailure(hr, "Failed to delete IIS location tag %ls",swLocationPath);
diff --git a/src/ext/Iis/ca/scawebappext.cpp b/src/ext/Iis/ca/scawebappext.cpp
index cf3b9dd3..2f74871c 100644
--- a/src/ext/Iis/ca/scawebappext.cpp
+++ b/src/ext/Iis/ca/scawebappext.cpp
@@ -124,7 +124,7 @@ HRESULT ScaWebAppExtensionsWrite(
         }
 
         // if verbs were specified and not the keyword "all"
-        if (pswappext->wzVerbs[0] && CSTR_EQUAL != CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pswappext->wzVerbs, -1, L"all", -1))
+        if (pswappext->wzVerbs[0] && CSTR_EQUAL != CompareStringOrdinal(pswappext->wzVerbs, -1, L"all", -1, TRUE))
         {
             hr = ::StringCchCatW(wzAppExtension, countof(wzAppExtension), L",");
             ExitOnFailure(hr, "Failed to concatenate comma to app extension string");
diff --git a/src/ext/NetFx/netcoresearch/netcoresearch.cpp b/src/ext/NetFx/netcoresearch/netcoresearch.cpp
index 8c788461..1b151d8f 100644
--- a/src/ext/NetFx/netcoresearch/netcoresearch.cpp
+++ b/src/ext/NetFx/netcoresearch/netcoresearch.cpp
@@ -86,7 +86,7 @@ HRESULT GetSearchStateFromArguments(
 
     wzSearchKind = argv[1];
 
-    if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzSearchKind, -1, L"runtime", -1))
+    if (CSTR_EQUAL == ::CompareStringOrdinal(wzSearchKind, -1, L"runtime", -1, TRUE))
     {
         if (argc != 4)
         {
@@ -103,7 +103,7 @@ HRESULT GetSearchStateFromArguments(
 
         pSearchState->Runtime.wzTargetName = wzTargetName;
     }
-    else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzSearchKind, -1, L"sdk", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(wzSearchKind, -1, L"sdk", -1, TRUE))
     {
         if (argc != 3)
         {
@@ -117,7 +117,7 @@ HRESULT GetSearchStateFromArguments(
         hr = StrStringToUInt32(wzMajorVersion, 0, reinterpret_cast<UINT*>(&pSearchState->Sdk.dwMajorVersion));
         ConsoleExitOnFailure(hr, CONSOLE_COLOR_RED, "Failed to get sdk major version from: %ls", wzMajorVersion);
     }
-    else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzSearchKind, -1, L"sdkfeatureband", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(wzSearchKind, -1, L"sdkfeatureband", -1, TRUE))
     {
         if (argc != 5)
         {
@@ -208,7 +208,7 @@ static HRESULT PerformRuntimeSearch(
         const hostfxr_dotnet_environment_framework_info* pFrameworkInfo = pInfo->frameworks + i;
         ReleaseVerutilVersion(pFrameworkVersion);
 
-        if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzTargetName, -1, pFrameworkInfo->name, -1))
+        if (CSTR_EQUAL != ::CompareStringOrdinal(wzTargetName, -1, pFrameworkInfo->name, -1, TRUE))
         {
             continue;
         }
diff --git a/src/ext/VisualStudio/ca/vsca.cpp b/src/ext/VisualStudio/ca/vsca.cpp
index 736add1f..681187d6 100644
--- a/src/ext/VisualStudio/ca/vsca.cpp
+++ b/src/ext/VisualStudio/ca/vsca.cpp
@@ -219,7 +219,7 @@ static HRESULT InstanceInProducts(
     {
         const LPCWSTR wzProduct = rgwzProducts[i];
 
-        if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, bstrId, -1, wzProduct, -1))
+        if (CSTR_EQUAL == ::CompareStringOrdinal(bstrId, -1, wzProduct, -1, TRUE))
         {
             hr = S_OK;
             ExitFunction();
@@ -579,7 +579,7 @@ static HRESULT SetPropertyForComponent(
     {
         const VS_COMPONENT_PROPERTY* pComponent = &rgComponents[i];
 
-        if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pComponent->pwzComponent, -1, wzComponent, -1))
+        if (CSTR_EQUAL == ::CompareStringOrdinal(pComponent->pwzComponent, -1, wzComponent, -1, TRUE))
         {
             hr = WcaSetIntProperty(pComponent->pwzProperty, 1);
             ExitOnFailure(hr, "Failed to set property: %ls", pComponent->pwzProperty);
diff --git a/src/libs/dutil/WixToolset.DUtil/acl2util.cpp b/src/libs/dutil/WixToolset.DUtil/acl2util.cpp
index 598f12e7..e62a03d4 100644
--- a/src/libs/dutil/WixToolset.DUtil/acl2util.cpp
+++ b/src/libs/dutil/WixToolset.DUtil/acl2util.cpp
@@ -106,7 +106,7 @@ extern "C" HRESULT DAPI AclGetAccountSidStringEx(
             HRESULT hrLength = ::StringCchLengthW(wzAccount, STRSAFE_MAX_CCH, reinterpret_cast<size_t*>(&cchAccount));
             AclExitOnFailure(hrLength, "Failed to get the length of the account name.");
 
-            if (11 < cchAccount && CSTR_EQUAL == CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, L"NT SERVICE\\", 11, wzAccount, 11))
+            if (11 < cchAccount && CSTR_EQUAL == CompareStringOrdinal(L"NT SERVICE\\", 11, wzAccount, 11, TRUE))
             {
                 // If the service is not installed then LookupAccountName doesn't resolve the SID, but we can calculate it.
                 LPCWSTR wzServiceName = &wzAccount[11];
diff --git a/src/libs/dutil/WixToolset.DUtil/apuputil.cpp b/src/libs/dutil/WixToolset.DUtil/apuputil.cpp
index eb96d515..62cf4d06 100644
--- a/src/libs/dutil/WixToolset.DUtil/apuputil.cpp
+++ b/src/libs/dutil/WixToolset.DUtil/apuputil.cpp
@@ -112,7 +112,7 @@ extern "C" HRESULT DAPI ApupAllocChainFromAtom(
     }
 
     // Trim the unused entries from the end, if any of the entries failed to parse or validate
-    if (pChain->cEntries != pFeed->cEntries) 
+    if (pChain->cEntries != pFeed->cEntries)
     {
         if (pChain->cEntries > 0)
         {
@@ -354,22 +354,22 @@ static HRESULT ParseEnclosure(
                     dwDigestLength = 0;
                     if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, 0, L"algorithm", -1, pAttribute->wzAttribute, -1))
                     {
-                        if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, L"md5", -1, pAttribute->wzValue, -1))
+                        if (CSTR_EQUAL == ::CompareStringOrdinal(L"md5", -1, pAttribute->wzValue, -1, TRUE))
                         {
                             pEnclosure->digestAlgorithm = APUP_HASH_ALGORITHM_MD5;
                             dwDigestLength = MD5_HASH_LEN;
                         }
-                        else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, L"sha1", -1, pAttribute->wzValue, -1))
+                        else if (CSTR_EQUAL == ::CompareStringOrdinal(L"sha1", -1, pAttribute->wzValue, -1, TRUE))
                         {
                             pEnclosure->digestAlgorithm = APUP_HASH_ALGORITHM_SHA1;
                             dwDigestLength = SHA1_HASH_LEN;
                         }
-                        else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, L"sha256", -1, pAttribute->wzValue, -1))
+                        else if (CSTR_EQUAL == ::CompareStringOrdinal(L"sha256", -1, pAttribute->wzValue, -1, TRUE))
                         {
                             pEnclosure->digestAlgorithm = APUP_HASH_ALGORITHM_SHA256;
                             dwDigestLength = SHA256_HASH_LEN;
                         }
-                        else if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, L"sha512", -1, pAttribute->wzValue, -1))
+                        else if (CSTR_EQUAL == ::CompareStringOrdinal(L"sha512", -1, pAttribute->wzValue, -1, TRUE))
                         {
                             pEnclosure->digestAlgorithm = APUP_HASH_ALGORITHM_SHA512;
                             dwDigestLength = SHA512_HASH_LEN;
diff --git a/src/libs/dutil/WixToolset.DUtil/iis7util.cpp b/src/libs/dutil/WixToolset.DUtil/iis7util.cpp
index d0a0b000..b0dc1444 100644
--- a/src/libs/dutil/WixToolset.DUtil/iis7util.cpp
+++ b/src/libs/dutil/WixToolset.DUtil/iis7util.cpp
@@ -222,7 +222,7 @@ BOOL DAPI CompareVariantPath(
         IisExitOnFailure(hr, "Failed to expand path %ls", pVariant2->bstrVal);
     }
 
-    fEqual = CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzValue1, -1, wzValue2, -1);
+    fEqual = CSTR_EQUAL == ::CompareStringOrdinal(wzValue1, -1, wzValue2, -1, TRUE);
 
 LExit:
     ReleaseNullStr(wzValue1);
@@ -258,7 +258,7 @@ extern "C" BOOL DAPI Iis7IsMatchingAppHostElement(
 
     hr = pElement->get_Name(&bstrElementName);
     IisExitOnFailure(hr, "Failed to get name of element");
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, pComparison->sczElementName, -1, bstrElementName, -1))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(pComparison->sczElementName, -1, bstrElementName, -1, TRUE))
     {
         ExitFunction();
     }
@@ -293,7 +293,7 @@ BOOL DAPI IsMatchingAppHostMethod(
 
     Assert(bstrName);
 
-    if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzMethodName, -1, bstrName, -1))
+    if (CSTR_EQUAL == ::CompareStringOrdinal(wzMethodName, -1, bstrName, -1, TRUE))
     {
         fResult = TRUE;
     }
diff --git a/src/libs/dutil/WixToolset.DUtil/path2utl.cpp b/src/libs/dutil/WixToolset.DUtil/path2utl.cpp
index d83a4578..06df8617 100644
--- a/src/libs/dutil/WixToolset.DUtil/path2utl.cpp
+++ b/src/libs/dutil/WixToolset.DUtil/path2utl.cpp
@@ -306,7 +306,7 @@ DAPI_(HRESULT) PathCompareCanonicalized(
     hr = PathCanonicalizeForComparison(wzPath2, dwDefaultFlags, &sczCanonicalized2);
     PathExitOnFailure(hr, "Failed to canonicalize wzPath2.");
 
-    nResult = ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, sczCanonicalized1, -1, sczCanonicalized2, -1);
+    nResult = ::CompareStringOrdinal(sczCanonicalized1, -1, sczCanonicalized2, -1, TRUE);
     PathExitOnNullWithLastError(nResult, hr, "Failed to compare canonicalized paths.");
 
     *pfEqual = CSTR_EQUAL == nResult;
@@ -364,7 +364,7 @@ DAPI_(HRESULT) PathDirectoryContainsPath(
         ExitFunction1(hr = S_FALSE);
     }
 
-    if (CSTR_EQUAL != ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, sczCanonicalizedDirectory, (DWORD)cchDirectory, sczCanonicalizedPath, (DWORD)cchDirectory))
+    if (CSTR_EQUAL != ::CompareStringOrdinal(sczCanonicalizedDirectory, (DWORD)cchDirectory, sczCanonicalizedPath, (DWORD)cchDirectory, TRUE))
     {
         ExitFunction1(hr = S_FALSE);
     }
diff --git a/src/tools/thmviewer/load.cpp b/src/tools/thmviewer/load.cpp
index 924f373d..ca1460e3 100644
--- a/src/tools/thmviewer/load.cpp
+++ b/src/tools/thmviewer/load.cpp
@@ -152,7 +152,7 @@ static DWORD WINAPI LoadThreadProc(
                 // If our file was updated, check to see if the modified time really changed. The notifications
                 // are often trigger happy thinking the file changed two or three times in a row. Maybe it's AV
                 // software creating the problems but actually checking the modified date works well.
-                if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pNotification->FileName, pNotification->FileNameLength / sizeof(WCHAR), wzFileName, -1))
+                if (CSTR_EQUAL == ::CompareStringOrdinal(pNotification->FileName, pNotification->FileNameLength / sizeof(WCHAR), wzFileName, -1, TRUE))
                 {
                     FILETIME ft = { };
                     FileGetTime(sczThemePath, NULL, NULL, &ft);
diff --git a/src/tools/thmviewer/thmviewer.cpp b/src/tools/thmviewer/thmviewer.cpp
index 5d4b88f5..69a9920b 100644
--- a/src/tools/thmviewer/thmviewer.cpp
+++ b/src/tools/thmviewer/thmviewer.cpp
@@ -241,7 +241,7 @@ static HRESULT ProcessCommandLine(
         {
             if (argv[i][0] == L'-' || argv[i][0] == L'/')
             {
-                if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, &argv[i][1], -1, L"lang", -1))
+                if (CSTR_EQUAL == ::CompareStringOrdinal(&argv[i][1], -1, L"lang", -1, TRUE))
                 {
                     if (i + 1 >= argc)
                     {
@@ -254,7 +254,7 @@ static HRESULT ProcessCommandLine(
             else
             {
                 LPCWSTR wzExtension = PathExtension(argv[i]);
-                if (CSTR_EQUAL == ::CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, wzExtension, -1, L".wxl", -1))
+                if (CSTR_EQUAL == ::CompareStringOrdinal(wzExtension, -1, L".wxl", -1, TRUE))
                 {
                     hr = StrAllocString(psczWxlFile, argv[i], 0);
                 }
diff --git a/src/wix/wixnative/wixnative.cpp b/src/wix/wixnative/wixnative.cpp
index d7db20f6..49299734 100644
--- a/src/wix/wixnative/wixnative.cpp
+++ b/src/wix/wixnative/wixnative.cpp
@@ -21,19 +21,19 @@ int __cdecl wmain(int argc, LPWSTR argv[])
     hr = WixNativeReadStdinPreamble();
     ExitOnFailure(hr, "failed to read stdin preamble");
 
-    if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"smartcab", -1))
+    if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"smartcab", -1, TRUE))
     {
         hr = SmartCabCommand(argc - 2, argv + 2);
     }
-    else if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"extractcab", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"extractcab", -1, TRUE))
     {
         hr = ExtractCabCommand(argc - 2, argv + 2);
     }
-    else if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"enumcab", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"enumcab", -1, TRUE))
     {
         hr = EnumCabCommand(argc - 2, argv + 2);
     }
-    else if (CSTR_EQUAL == ::CompareString(LOCALE_INVARIANT, NORM_IGNORECASE, argv[1], -1, L"certhashes", -1))
+    else if (CSTR_EQUAL == ::CompareStringOrdinal(argv[1], -1, L"certhashes", -1, TRUE))
     {
         hr = CertificateHashesCommand(argc - 2, argv + 2);
     }