2 files changed, 12 insertions, 2 deletions

diff --git a/src/ext/Firewall/firewall_t.proj b/src/ext/Firewall/firewall_t.proj
index 72128805..f2cee0a0 100644
--- a/src/ext/Firewall/firewall_t.proj
+++ b/src/ext/Firewall/firewall_t.proj
@@ -3,7 +3,7 @@
 
 <Project Sdk="Microsoft.Build.Traversal">
   <ItemGroup>
-    <ProjectReference Include="test\WixToolsetTest.Firewall\WixToolsetTest.Firewall.csproj" Targets="Test" />
+    <ProjectReference Include="test\WixToolsetTest.Firewall\WixToolsetTest.Firewall.csproj" />
     <ProjectReference Include="wixext\WixToolset.Firewall.wixext.csproj" Targets="Pack" Properties="NoBuild=true" />
   </ItemGroup>
 
@@ -14,4 +14,8 @@
 
     <Delete Files="$(ArtifactsFolder)WixToolset.Firewall.wixext.*.nupkg" />
   </Target>
+
+  <Target Name="WixTest">
+    <MSBuild Projects="test\WixToolsetTest.Firewall\WixToolsetTest.Firewall.csproj" Targets="Test" />
+  </Target>
 </Project>
diff --git a/src/ext/Firewall/test/WixToolsetTest.Firewall/FirewallExtensionFixture.cs b/src/ext/Firewall/test/WixToolsetTest.Firewall/FirewallExtensionFixture.cs
index 9b4cb2b1..3be8af0e 100644
--- a/src/ext/Firewall/test/WixToolsetTest.Firewall/FirewallExtensionFixture.cs
+++ b/src/ext/Firewall/test/WixToolsetTest.Firewall/FirewallExtensionFixture.cs
@@ -1,7 +1,12 @@
 // 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.
 
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+[assembly: Parallelize(Scope = ExecutionScope.MethodLevel)]
+
 namespace WixToolsetTest.Firewall
 {
+    using System;
     using System.Data;
     using System.IO;
     using System.Linq;
@@ -687,8 +692,9 @@ namespace WixToolsetTest.Firewall
             var folder = TestData.Get(@"TestData", path);
             var build = new Builder(folder, typeof(FirewallExtensionFactory), new[] { folder });
             var output = Path.Combine(folder, $"Firewall{ruleName}.xml");
+            var isOfficialBuild = !String.IsNullOrEmpty(Environment.GetEnvironmentVariable("WixOfficialBuild"));
 
-            build.BuildAndDecompileAndBuild(Build, Decompile, output, validate: true);
+            build.BuildAndDecompileAndBuild(Build, Decompile, output, validate: isOfficialBuild);
 
             var doc = XDocument.Load(output);
             var actual = doc.Descendants()