12 files changed, 439 insertions, 7 deletions

diff --git a/src/test/burn/Directory.wixproj.targets b/src/test/burn/Directory.wixproj.targets
index 17a46e2a..4037e865 100644
--- a/src/test/burn/Directory.wixproj.targets
+++ b/src/test/burn/Directory.wixproj.targets
@@ -7,6 +7,7 @@
     <WebServerBaseUrl Condition=" '$(WebServerBaseUrl)' == '' ">http://localhost:9999/e2e/</WebServerBaseUrl>
     <DefineConstants>TestGroupName=$(TestGroupName);PackageName=$(PackageName);BundleName=$(BundleName);WebServerBaseUrl=$(WebServerBaseUrl);$(DefineConstants)</DefineConstants>
     <DefineConstants Condition=" '$(BA)' != '' ">BA=$(BA);$(DefineConstants)</DefineConstants>
+    <DefineConstants Condition=" '$(BundleLogDirectory)' != '' ">BundleLogDirectory=$(BundleLogDirectory);$(DefineConstants)</DefineConstants>
     <DefineConstants Condition=" '$(CabPrefix)' != '' ">CabPrefix=$(CabPrefix);$(DefineConstants)</DefineConstants>
     <DefineConstants Condition=" '$(IncludeSoftwareTag)' == 'true' ">SoftwareTag=1;$(DefineConstants)</DefineConstants>
     <DefineConstants Condition=" '$(ProductCode)' != '' ">ProductCode=$(ProductCode);$(DefineConstants)</DefineConstants>
diff --git a/src/test/burn/TestData/LongPathTests/NonCompressedBundle/NonCompressedBundle.wixproj b/src/test/burn/TestData/LongPathTests/NonCompressedBundle/NonCompressedBundle.wixproj
new file mode 100644
index 00000000..3686200c
--- /dev/null
+++ b/src/test/burn/TestData/LongPathTests/NonCompressedBundle/NonCompressedBundle.wixproj
@@ -0,0 +1,19 @@
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+<Project Sdk="WixToolset.Sdk">
+  <PropertyGroup>
+    <OutputType>Bundle</OutputType>
+    <UpgradeCode>{EFCF768F-1B06-4B68-9DE0-9244F8212D31}</UpgradeCode>
+    <BundleLogDirectory>[LocalAppDataFolder]Temp</BundleLogDirectory>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="..\..\Templates\Bundle.wxs" Link="Bundle.wxs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\PackageA\PackageA.wixproj" />
+    <ProjectReference Include="..\..\TestBA\TestBAWixlib\testbawixlib.wixproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="WixToolset.Bal.wixext" />
+    <PackageReference Include="WixToolset.NetFx.wixext" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/src/test/burn/TestData/LongPathTests/NonCompressedBundle/NonCompressedBundle.wxs b/src/test/burn/TestData/LongPathTests/NonCompressedBundle/NonCompressedBundle.wxs
new file mode 100644
index 00000000..e3872eb1
--- /dev/null
+++ b/src/test/burn/TestData/LongPathTests/NonCompressedBundle/NonCompressedBundle.wxs
@@ -0,0 +1,10 @@
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+
+
+<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
+  <Fragment>
+    <PackageGroup Id="BundlePackages">
+      <MsiPackage Compressed="no" Id="PackageA" SourceFile="$(var.PackageA.TargetPath)" />
+    </PackageGroup>
+  </Fragment>
+</Wix>
diff --git a/src/test/burn/TestData/LongPathTests/PackageA/PackageA.wixproj b/src/test/burn/TestData/LongPathTests/PackageA/PackageA.wixproj
new file mode 100644
index 00000000..798452e7
--- /dev/null
+++ b/src/test/burn/TestData/LongPathTests/PackageA/PackageA.wixproj
@@ -0,0 +1,10 @@
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+<Project Sdk="WixToolset.Sdk">
+  <PropertyGroup>
+    <CabPrefix>a</CabPrefix>
+    <UpgradeCode>{4DC05A2A-382D-4E7D-B6DA-163908396373}</UpgradeCode>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="..\..\Templates\Package.wxs" Link="Package.wxs" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/src/test/burn/TestData/Templates/Bundle.wxs b/src/test/burn/TestData/Templates/Bundle.wxs
index b211d9c3..612e67f5 100644
--- a/src/test/burn/TestData/Templates/Bundle.wxs
+++ b/src/test/burn/TestData/Templates/Bundle.wxs
@@ -3,10 +3,13 @@
 <?ifndef Version?>
 <?define Version = 1.0.0.0?>
 <?endif?>
+<?ifndef BundleLogDirectory?>
+<?define BundleLogDirectory = .?>
+<?endif?>
 
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs" xmlns:bal="http://wixtoolset.org/schemas/v4/wxs/bal">
   <Bundle Name="~$(var.TestGroupName) - $(var.BundleName)" Version="$(var.Version)" UpgradeCode="$(var.UpgradeCode)" Compressed="yes">
-    <Log Prefix="~$(var.TestGroupName)_$(var.BundleName)" />
+    <Log Prefix="$(var.BundleLogDirectory)\~$(var.TestGroupName)_$(var.BundleName)" />
 
     <Variable Name="TestGroupName" Value="$(var.TestGroupName)" />
 
diff --git a/src/test/burn/TestExe/Task.cs b/src/test/burn/TestExe/Task.cs
index 59f774fb..0d283c6c 100644
--- a/src/test/burn/TestExe/Task.cs
+++ b/src/test/burn/TestExe/Task.cs
@@ -2,8 +2,10 @@
 
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
+using System.Runtime.InteropServices;
 using Microsoft.Win32;
 
 namespace TestExe
@@ -151,6 +153,67 @@ namespace TestExe
         }
     }
 
+    public class DeleteManifestsTask : Task
+    {
+        public DeleteManifestsTask(string Data) : base(Data) { }
+
+        public override void RunTask()
+        {
+            string filePath = System.Environment.ExpandEnvironmentVariables(this.data);
+            IntPtr type = new IntPtr(24); //RT_MANIFEST
+            IntPtr name = new IntPtr(1); //CREATEPROCESS_MANIFEST_RESOURCE_ID
+            DeleteResource(filePath, type, name, 1033);
+        }
+
+        private static void DeleteResource(string filePath, IntPtr type, IntPtr name, ushort language, bool throwOnError = false)
+        {
+            bool discard = true;
+            IntPtr handle = BeginUpdateResourceW(filePath, false);
+            try
+            {
+                if (handle == IntPtr.Zero)
+                {
+                    throw new Win32Exception();
+                }
+
+                if (!UpdateResourceW(handle, type, name, language, IntPtr.Zero, 0))
+                {
+                    throw new Win32Exception();
+                }
+
+                discard = false;
+            }
+            catch
+            {
+                if (throwOnError)
+                {
+                    throw;
+                }
+            }
+            finally
+            {
+                if (handle != IntPtr.Zero)
+                {
+                    if (!EndUpdateResourceW(handle, discard) && throwOnError)
+                    {
+                        throw new Win32Exception();
+                    }
+                }
+            }
+        }
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
+        private extern static IntPtr BeginUpdateResourceW(string fileName, [MarshalAs(UnmanagedType.Bool)] bool deleteExistingResources);
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private extern static bool UpdateResourceW(IntPtr hUpdate, IntPtr type, IntPtr name, ushort language, IntPtr pData, uint cb);
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private extern static bool EndUpdateResourceW(IntPtr hUpdate, [MarshalAs(UnmanagedType.Bool)] bool discard);
+    }
+
     public class TaskParser
     {
 
@@ -197,6 +260,10 @@ namespace TestExe
                                 t = new FileExistsTask(args[i + 1]);
                                 tasks.Add(t);
                                 break;
+                            case "/dm":
+                                t = new DeleteManifestsTask(args[i + 1]);
+                                tasks.Add(t);
+                                break;
 #if NET35
                             case "/pinfo":
                                 t = new ProcessInfoTask(args[i + 1]);
diff --git a/src/test/burn/WixTestTools/BundleInstaller.cs b/src/test/burn/WixTestTools/BundleInstaller.cs
index 5551d3c0..0f2cfa8f 100644
--- a/src/test/burn/WixTestTools/BundleInstaller.cs
+++ b/src/test/burn/WixTestTools/BundleInstaller.cs
@@ -28,6 +28,8 @@ namespace WixTestTools
 
         public int? AlternateExitCode { get; set; }
 
+        public string LogDirectory { get; set; }
+
         public int? LastExitCode { get; set; }
 
         /// <summary>
@@ -194,7 +196,7 @@ namespace WixTestTools
             sb.Append(" -quiet");
             
             // Generate the log file name.
-            string logFile = Path.Combine(Path.GetTempPath(), String.Format("{0}_{1}_{2:yyyyMMddhhmmss}_{4}_{3}.log", this.TestGroupName, this.TestName, DateTime.UtcNow, Path.GetFileNameWithoutExtension(this.Bundle), mode));
+            string logFile = Path.Combine(this.LogDirectory ?? Path.GetTempPath(), String.Format("{0}_{1}_{2:yyyyMMddhhmmss}_{4}_{3}.log", this.TestGroupName, this.TestName, DateTime.UtcNow, Path.GetFileNameWithoutExtension(this.Bundle), mode));
             sb.AppendFormat(" -log \"{0}\"", logFile);
 
             // Set operation.
diff --git a/src/test/burn/WixTestTools/MSIExec.cs b/src/test/burn/WixTestTools/MSIExec.cs
index a10a48d6..5f57da7b 100644
--- a/src/test/burn/WixTestTools/MSIExec.cs
+++ b/src/test/burn/WixTestTools/MSIExec.cs
@@ -110,7 +110,7 @@ namespace WixTestTools
             this.NoRestart = true;
             this.ForceRestart = false;
             this.PromptRestart = false;
-            this.LogFile = string.Empty;
+            this.LogFile = String.Empty;
             this.LoggingOptions = MSIExecLoggingOptions.VOICEWARMUP;
             this.OtherArguments = String.Empty;
         }
@@ -230,14 +230,14 @@ namespace WixTestTools
             }
 
             // logfile and logging options
-            if (0 != loggingOptionsString.Length || !string.IsNullOrEmpty(this.LogFile))
+            if (0 != loggingOptionsString.Length || !String.IsNullOrEmpty(this.LogFile))
             {
                 arguments.Append(" /l");
                 if (0 != loggingOptionsString.Length)
                 {
                     arguments.AppendFormat("{0} ", loggingOptionsString);
                 }
-                if (!string.IsNullOrEmpty(this.LogFile))
+                if (!String.IsNullOrEmpty(this.LogFile))
                 {
                     arguments.AppendFormat(" \"{0}\" ", this.LogFile);
                 }
@@ -268,7 +268,7 @@ namespace WixTestTools
             };
 
             // product
-            if (!string.IsNullOrEmpty(this.Product))
+            if (!String.IsNullOrEmpty(this.Product))
             {
                 arguments.AppendFormat(" \"{0}\" ", this.Product);
             }
@@ -311,6 +311,12 @@ namespace WixTestTools
             ERROR_CALL_NOT_IMPLEMENTED = 120,
 
             /// <summary>
+            /// ERROR_FILENAME_EXCED_RANGE              206
+            /// The filename or extension is too long.
+            /// </summary>
+            ERROR_FILENAME_EXCED_RANGE = 206,
+
+            /// <summary>
             /// ERROR_APPHELP_BLOCK                     1259 
             /// If Windows Installer determines a product may be incompatible with the current operating system, 
             /// it displays a dialog box informing the user and asking whether to try to install anyway. 
diff --git a/src/test/burn/WixTestTools/TestTool.cs b/src/test/burn/WixTestTools/TestTool.cs
index eb77c75b..79e7004c 100644
--- a/src/test/burn/WixTestTools/TestTool.cs
+++ b/src/test/burn/WixTestTools/TestTool.cs
@@ -229,7 +229,7 @@ namespace WixTestTools
             returnValue.AppendLine("Tool run result:");
             returnValue.AppendLine("----------------");
             returnValue.AppendLine("Command:");
-            returnValue.AppendLine($"\"{result.StartInfo.FileName}\" {result.StartInfo.Arguments}");
+            returnValue.AppendLine($"\"{result.FileName}\" {result.Arguments}");
             returnValue.AppendLine();
             returnValue.AppendLine("Standard Output:");
             foreach (var line in result.StandardOutput ?? new string[0])
diff --git a/src/test/burn/WixToolsetTest.BurnE2E/LongPathTests.cs b/src/test/burn/WixToolsetTest.BurnE2E/LongPathTests.cs
new file mode 100644
index 00000000..ba793d7a
--- /dev/null
+++ b/src/test/burn/WixToolsetTest.BurnE2E/LongPathTests.cs
@@ -0,0 +1,298 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolsetTest.BurnE2E
+{
+    using System;
+    using System.ComponentModel;
+    using System.IO;
+    using System.Runtime.InteropServices;
+    using Microsoft.Win32;
+    using WixBuildTools.TestSupport;
+    using WixTestTools;
+    using WixToolset.Mba.Core;
+    using Xunit;
+    using Xunit.Abstractions;
+
+    public class LongPathTests : BurnE2ETests
+    {
+        public LongPathTests(ITestOutputHelper testOutputHelper) : base(testOutputHelper) { }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x86_wixstdba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA", "BundleA");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x86_testba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA", "BundleB");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x86_dnctestba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA", "BundleC");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x86_wixba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA", "BundleD");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x64_wixstdba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA_x64", "BundleA_x64");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimplePerUserBundle_x64_wixstdba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageApu_x64", "BundleApu_x64", "PackagePerUser.wxs", unchecked((int)0xc0000005));
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x64_testba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA_x64", "BundleB_x64");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x64_dnctestba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA_x64", "BundleC_x64");
+        }
+
+        [RuntimeFact]
+        public void CanInstallAndUninstallSimpleBundle_x64_dncwixba()
+        {
+            this.CanInstallAndUninstallSimpleBundle("PackageA_x64", "BundleD_x64");
+        }
+
+        private void CanInstallAndUninstallSimpleBundle(string packageName, string bundleName, string fileName = "Package.wxs", int? alternateExitCode = null)
+        {
+            var package = this.CreatePackageInstaller(Path.Combine("..", "BasicFunctionalityTests", packageName));
+
+            var bundle = this.CreateBundleInstaller(Path.Combine("..", "BasicFunctionalityTests", bundleName));
+            bundle.AlternateExitCode = alternateExitCode;
+
+            using var dfs = new DisposableFileSystem();
+            var baseFolder = GetLongPath(dfs.GetFolder());
+
+            var packageSourceCodeInstalled = package.GetInstalledFilePath(fileName);
+
+            // Source file should *not* be installed
+            Assert.False(File.Exists(packageSourceCodeInstalled), $"{packageName} payload should not be there on test start: {packageSourceCodeInstalled}");
+
+            var bundleFileInfo = new FileInfo(bundle.Bundle);
+            var bundleCopiedPath = Path.Combine(baseFolder, bundleFileInfo.Name);
+            bundleFileInfo.CopyTo(bundleCopiedPath);
+
+            bundle.Install(bundleCopiedPath);
+            bundle.VerifyRegisteredAndInPackageCache();
+
+            // Source file should be installed
+            Assert.True(File.Exists(packageSourceCodeInstalled), $"Should have found {packageName} payload installed at: {packageSourceCodeInstalled}");
+
+            if (alternateExitCode == bundle.LastExitCode)
+            {
+                WixAssert.Skip($"Install exited with {bundle.LastExitCode}");
+            }
+
+            bundle.Uninstall(bundleCopiedPath);
+
+            // Source file should *not* be installed
+            Assert.False(File.Exists(packageSourceCodeInstalled), $"{packageName} payload should have been removed by uninstall from: {packageSourceCodeInstalled}");
+
+            bundle.VerifyUnregisteredAndRemovedFromPackageCache();
+
+            if (alternateExitCode == bundle.LastExitCode)
+            {
+                WixAssert.Skip($"Uninstall exited with {bundle.LastExitCode}");
+            }
+        }
+
+        [RuntimeFact]
+        public void CanLayoutNonCompressedBundleToLongPath()
+        {
+            var nonCompressedBundle = this.CreateBundleInstaller("NonCompressedBundle");
+            var testBAController = this.CreateTestBAController();
+
+            testBAController.SetPackageRequestedState("NetFx48Web", RequestState.None);
+
+            using var dfs = new DisposableFileSystem();
+            var layoutDirectory = GetLongPath(dfs.GetFolder());
+
+            nonCompressedBundle.Layout(layoutDirectory);
+            nonCompressedBundle.VerifyUnregisteredAndRemovedFromPackageCache();
+
+            Assert.True(File.Exists(Path.Combine(layoutDirectory, "NonCompressedBundle.exe")));
+            Assert.True(File.Exists(Path.Combine(layoutDirectory, "PackageA.msi")));
+            Assert.True(File.Exists(Path.Combine(layoutDirectory, "1a.cab")));
+            Assert.False(File.Exists(Path.Combine(layoutDirectory, @"redist\ndp48-web.exe")));
+        }
+
+        [RuntimeFact]
+        public void CanInstallNonCompressedBundleWithLongTempPath()
+        {
+            this.InstallNonCompressedBundle(longTemp: true, useOriginalTempForLog: true);
+        }
+
+        [RuntimeFact]
+        public void CannotInstallNonCompressedBundleWithLongPackageCachePath()
+        {
+            var installLogPath = this.InstallNonCompressedBundle((int)MSIExec.MSIExecReturnCode.ERROR_INSTALL_FAILURE, longPackageCache: true);
+            Assert.True(LogVerifier.MessageInLogFile(installLogPath, @"Error 0x80070643: Failed to install MSI package"));
+        }
+
+        [RuntimeFact]
+        public void CannotInstallNonCompressedBundleWithLongWorkingPath()
+        {
+            var installLogPath = this.InstallNonCompressedBundle((int)MSIExec.MSIExecReturnCode.ERROR_FILENAME_EXCED_RANGE | unchecked((int)0x80070000), longWorkingPath: true);
+            Assert.True(LogVerifier.MessageInLogFile(installLogPath, @"Error 0x800700ce: Failed to load BA DLL"));
+        }
+
+        public string InstallNonCompressedBundle(int expectedExitCode = 0, bool longTemp = false, bool useOriginalTempForLog = false, bool longWorkingPath = false, bool longPackageCache = false, int? alternateExitCode = null)
+        {
+            var deletePolicyKey = false;
+            string originalEngineWorkingDirectoryValue = null;
+            string originalPackageCacheValue = null;
+            var originalTemp = Environment.GetEnvironmentVariable("TMP");
+            var packageA = this.CreatePackageInstaller("PackageA");
+            var nonCompressedBundle = this.CreateBundleInstaller("NonCompressedBundle");
+            var policyPath = nonCompressedBundle.GetFullBurnPolicyRegistryPath();
+            string installLogPath = null;
+
+            try
+            {
+                using var dfs = new DisposableFileSystem();
+                var originalBaseFolder = dfs.GetFolder();
+                var baseFolder = GetLongPath(originalBaseFolder);
+                var sourceFolder = Path.Combine(baseFolder, "source");
+                var workingFolder = Path.Combine(baseFolder, "working");
+                var tempFolder = Path.Combine(originalBaseFolder, new string('d', 260 - originalBaseFolder.Length - 2));
+                var packageCacheFolder = Path.Combine(baseFolder, "package cache");
+
+                var copyResult = TestDataFolderFileSystem.RobocopyFolder(this.TestContext.TestDataFolder, sourceFolder);
+                Assert.True(copyResult.ExitCode >= 0 && copyResult.ExitCode < 8, $"Exit code: {copyResult.ExitCode}\r\nOutput: {String.Join("\r\n", copyResult.StandardOutput)}\r\nError: {String.Join("\r\n", copyResult.StandardError)}");
+
+                var bundleFileInfo = new FileInfo(nonCompressedBundle.Bundle);
+                var bundleCopiedPath = Path.Combine(sourceFolder, bundleFileInfo.Name);
+
+                var policyKey = Registry.LocalMachine.OpenSubKey(policyPath, writable: true);
+                if (policyKey == null)
+                {
+                    policyKey = Registry.LocalMachine.CreateSubKey(policyPath, writable: true);
+                    deletePolicyKey = true;
+                }
+
+                using (policyKey)
+                {
+                    originalEngineWorkingDirectoryValue = policyKey.GetValue("EngineWorkingDirectory") as string;
+                    originalPackageCacheValue = policyKey.GetValue("PackageCache") as string;
+
+                    if (longWorkingPath)
+                    {
+                        policyKey.SetValue("EngineWorkingDirectory", workingFolder);
+                    }
+
+                    if (longPackageCache)
+                    {
+                        policyKey.SetValue("PackageCache", packageCacheFolder);
+                    }
+                }
+
+                if (longTemp)
+                {
+                    Environment.SetEnvironmentVariable("TMP", tempFolder);
+
+                    if (useOriginalTempForLog)
+                    {
+                        nonCompressedBundle.LogDirectory = originalTemp;
+                    }
+                }
+
+                try
+                {
+                    nonCompressedBundle.AlternateExitCode = alternateExitCode;
+                    installLogPath = nonCompressedBundle.Install(bundleCopiedPath, expectedExitCode);
+
+                    if (alternateExitCode == nonCompressedBundle.LastExitCode)
+                    {
+                        WixAssert.Skip($"Install exited with {nonCompressedBundle.LastExitCode}");
+                    }
+                }
+                finally
+                {
+                    TestDataFolderFileSystem.RobocopyFolder(tempFolder, originalTemp);
+                }
+
+                installLogPath = Path.Combine(originalTemp, Path.GetFileName(installLogPath));
+
+                if (expectedExitCode == 0)
+                {
+                    var registration = nonCompressedBundle.VerifyRegisteredAndInPackageCache();
+                    packageA.VerifyInstalled(true);
+
+                    nonCompressedBundle.Uninstall(registration.CachePath);
+
+                    if (alternateExitCode == nonCompressedBundle.LastExitCode)
+                    {
+                        WixAssert.Skip($"Uninstall exited with {nonCompressedBundle.LastExitCode}");
+                    }
+                }
+
+                nonCompressedBundle.VerifyUnregisteredAndRemovedFromPackageCache();
+                packageA.VerifyInstalled(false);
+
+                return installLogPath;
+            }
+            finally
+            {
+                Environment.SetEnvironmentVariable("TMP", originalTemp);
+
+                if (deletePolicyKey)
+                {
+                    Registry.LocalMachine.DeleteSubKeyTree(policyPath);
+                }
+                else
+                {
+                    using (var policyKey = Registry.LocalMachine.OpenSubKey(policyPath, writable: true))
+                    {
+                        policyKey?.SetValue("EngineWorkingDirectory", originalEngineWorkingDirectoryValue);
+                        policyKey?.SetValue("PackageCache", originalPackageCacheValue);
+                    }
+                }
+            }
+        }
+
+        private static string GetLongPath(string baseFolder)
+        {
+            Directory.CreateDirectory(baseFolder);
+
+            // Try to create a directory that is longer than MAX_PATH but without the \\?\ prefix to detect OS support for long paths.
+            // Need to PInvoke CreateDirectoryW directly because .NET methods will append the \\?\ prefix.
+            foreach (var c in new char[] { 'a', 'b', 'c' })
+            {
+                baseFolder = Path.Combine(baseFolder, new string(c, 100));
+                if (!CreateDirectoryW(baseFolder, IntPtr.Zero))
+                {
+                    int lastError = Marshal.GetLastWin32Error();
+                    if (lastError == 206)
+                    {
+                        WixAssert.Skip($"MAX_PATH is being enforced ({baseFolder})");
+                    }
+                    throw new Win32Exception(lastError);
+                }
+            }
+
+            return baseFolder;
+        }
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private extern static bool CreateDirectoryW(string lpPathName, IntPtr lpSecurityAttributes);
+    }
+}
diff --git a/src/test/burn/WixToolsetTest.BurnE2E/testhost.longpathaware.manifest b/src/test/burn/WixToolsetTest.BurnE2E/testhost.longpathaware.manifest
new file mode 100644
index 00000000..a56ab91a
--- /dev/null
+++ b/src/test/burn/WixToolsetTest.BurnE2E/testhost.longpathaware.manifest
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+
+
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+ <application xmlns="urn:schemas-microsoft-com:asm.v3">
+  <windowsSettings xmlns:ws2="http://schemas.microsoft.com/SMI/2016/WindowsSettings">
+   <ws2:longPathAware>true</ws2:longPathAware>
+  </windowsSettings>
+ </application>
+</assembly>
diff --git a/src/test/burn/test_burn.cmd b/src/test/burn/test_burn.cmd
index 83401614..80467f39 100644
--- a/src/test/burn/test_burn.cmd
+++ b/src/test/burn/test_burn.cmd
@@ -9,11 +9,16 @@
 @if /i "%1"=="test" set RuntimeTestsEnabled=true
 @if not "%1"=="" shift & goto parse_args
 
+@set _B=%~dp0..\..\..\build\IntegrationBurn\%_C%
+
 @echo Burn integration tests %_C%
 
 msbuild -t:Build -Restore -p:Configuration=%_C% -warnaserror -bl:%_L%\test_burn_build.binlog || exit /b
 msbuild -t:Build -Restore TestData\TestData.proj -p:Configuration=%_C% -m -bl:%_L%\test_burn_data_build.binlog || exit /b
 
+"%_B%\net35\win-x86\testexe.exe" /dm "%_B%\netcoreapp3.1\testhost.exe"
+mt.exe -manifest "WixToolsetTest.BurnE2E\testhost.longpathaware.manifest" -updateresource:"%_B%\netcoreapp3.1\testhost.exe"
+
 @if not "%RuntimeTestsEnabled%"=="true" goto :LExit
 
 dotnet test -c %_C% --no-build WixToolsetTest.BurnE2E -l "trx;LogFileName=%_L%\TestResults\WixToolsetTest.BurnE2E.trx" || exit /b