3 files changed, 10 insertions, 3 deletions

diff --git a/src/WixToolset.Core/Common.cs b/src/WixToolset.Core/Common.cs
index ebcbd36f..2d8f9509 100644
--- a/src/WixToolset.Core/Common.cs
+++ b/src/WixToolset.Core/Common.cs
@@ -172,6 +172,8 @@ namespace WixToolset.Core
         /// <exception cref="WixException">The code page is invalid for summary information.</exception>
         public static int GetValidCodePage(string value, bool allowNoChange = false, bool onlyAnsi = false, SourceLineNumber sourceLineNumbers = null)
         {
+            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+
             try
             {
                 Encoding encoding;
@@ -190,7 +192,7 @@ namespace WixToolset.Core
                         return -1;
                     }
 
-                    encoding = CodePagesEncodingProvider.Instance.GetEncoding(codePage);
+                    encoding = Encoding.GetEncoding(codePage);
                 }
                 else
                 {
@@ -208,6 +210,11 @@ namespace WixToolset.Core
                     }
                 }
 
+                if (encoding == null)
+                {
+                    throw new WixException(ErrorMessages.IllegalCodepage(sourceLineNumbers, codePage));
+                }
+
                 return encoding.CodePage;
             }
             catch (ArgumentException ex)
diff --git a/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFile/Package.wxs b/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFile/Package.wxs
index cdc323ec..6da3dcbe 100644
--- a/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFile/Package.wxs
+++ b/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFile/Package.wxs
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
-  <Product Id="*" Name="MsiPackage" Language="1033" Version="1.0.0.0" Manufacturer="Example Corporation" UpgradeCode="047730a5-30fe-4a62-a520-da9381b8226a">
+  <Product Id="*" Name="MsiPackage" Codepage="1252" Language="1033" Version="1.0.0.0" Manufacturer="Example Corporation" UpgradeCode="047730a5-30fe-4a62-a520-da9381b8226a">
     <Package InstallerVersion="200" Compressed="no" InstallScope="perMachine" />
 
     <MajorUpgrade DowngradeErrorMessage="!(loc.DowngradeError)" />
diff --git a/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFileCompressed/Package.wxs b/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFileCompressed/Package.wxs
index 0b743c81..8bb1f6af 100644
--- a/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFileCompressed/Package.wxs
+++ b/src/test/WixToolsetTest.CoreIntegration/TestData/SingleFileCompressed/Package.wxs
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
-  <Product Id="*" Name="MsiPackage" Language="1033" Version="1.0.0.0" Manufacturer="Example Corporation" UpgradeCode="047730a5-30fe-4a62-a520-da9381b8226a">
+  <Product Id="*" Name="MsiPackage" Codepage="65001" Language="1033" Version="1.0.0.0" Manufacturer="Example Corporation" UpgradeCode="047730a5-30fe-4a62-a520-da9381b8226a">
     <Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />
 
     <MajorUpgrade DowngradeErrorMessage="!(loc.DowngradeError)" />