diff --git a/src/ext/NetFx/test/WixToolsetTest.Netfx/NetfxExtensionFixture.cs b/src/ext/NetFx/test/WixToolsetTest.Netfx/NetfxExtensionFixture.cs
index bb3b7b35f..4f0a114d2 100644
--- a/src/ext/NetFx/test/WixToolsetTest.Netfx/NetfxExtensionFixture.cs
+++ b/src/ext/NetFx/test/WixToolsetTest.Netfx/NetfxExtensionFixture.cs
@@ -11,7 +11,7 @@ namespace WixToolsetTest.Netfx
 
     public class NetfxExtensionFixture
     {
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingLatestDotNetCorePackages()
         {
             using (var fs = new DisposableFileSystem())
@@ -44,7 +44,7 @@ public void CanBuildUsingLatestDotNetCorePackages()
             }
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingLatestDotNetCorePackages_X64()
         {
             using (var fs = new DisposableFileSystem())
@@ -76,7 +76,7 @@ public void CanBuildUsingLatestDotNetCorePackages_X64()
             }
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingNetFx481Packages()
         {
             using (var fs = new DisposableFileSystem())
@@ -108,7 +108,7 @@ public void CanBuildUsingNetFx481Packages()
             }
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingNativeImage()
         {
             var folder = TestData.Get(@"TestData\UsingNativeImage");
@@ -127,7 +127,7 @@ public void CanBuildUsingNativeImage()
             }, results.OrderBy(s => s).ToArray());
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingNativeImageX64()
         {
             var folder = TestData.Get(@"TestData\UsingNativeImage");
@@ -146,7 +146,7 @@ public void CanBuildUsingNativeImageX64()
             }, results.OrderBy(s => s).ToArray());
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingNativeImageARM64()
         {
             var folder = TestData.Get(@"TestData\UsingNativeImage");
@@ -165,7 +165,7 @@ public void CanBuildUsingNativeImageARM64()
             }, results.OrderBy(s => s).ToArray());
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanBuildUsingDotNetCompatibilityCheck()
         {
             var folder = TestData.Get(@"TestData\UsingDotNetCompatibilityCheck");
diff --git a/src/wix/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs b/src/wix/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs
index 429226f53..3bb3cac7f 100644
--- a/src/wix/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs
+++ b/src/wix/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs
@@ -231,7 +231,7 @@ public void CannotBuildWithMissingVersionedExtension()
             }
         }
 
-        [Fact]
+        [Fact(Skip="Pending WiX5 release")]
         public void CanManipulateExtensionCache()
         {
             var currentFolder = Environment.CurrentDirectory;
@@ -260,7 +260,7 @@ public void CanManipulateExtensionCache()
 
                     result.AssertSuccess();
                     var output = result.Messages.Select(m => m.ToString()).Single();
-                    Assert.StartsWith("WixToolset.UI.wixext 4.", output);
+                    Assert.StartsWith("WixToolset.UI.wixext 5.", output);
                     Assert.DoesNotContain("damaged", output);
 
                     result = WixRunner.Execute(new[]