diff --git a/test/E2ETests/NtlmAuthentationTest.cs b/test/E2ETests/NtlmAuthentationTest.cs
index 81c0f3915b..db2380cc05 100644
--- a/test/E2ETests/NtlmAuthentationTest.cs
+++ b/test/E2ETests/NtlmAuthentationTest.cs
@@ -8,7 +8,7 @@ namespace E2ETests
 {
     public partial class SmokeTests
     {
-        //[Theory]
+        [Theory]
         [InlineData(ServerType.Helios, KreFlavor.DesktopClr, KreArchitecture.x86, "http://localhost:5001/", false)]
         [InlineData(ServerType.WebListener, KreFlavor.DesktopClr, KreArchitecture.x86, "http://localhost:5002/", false)]
         [InlineData(ServerType.Helios, KreFlavor.DesktopClr, KreArchitecture.amd64, "http://localhost:5001/", false)]
diff --git a/test/E2ETests/PublishAndRunTests.cs b/test/E2ETests/PublishAndRunTests.cs
index 9db90b491f..f5ad01b2aa 100644
--- a/test/E2ETests/PublishAndRunTests.cs
+++ b/test/E2ETests/PublishAndRunTests.cs
@@ -10,7 +10,7 @@ namespace E2ETests
     /// </summary>
     public partial class SmokeTests
     {
-        //[Theory]
+        [Theory]
         [InlineData(ServerType.Helios, KreFlavor.DesktopClr, KreArchitecture.x86, "http://localhost:5001/", false)]
         [InlineData(ServerType.WebListener, KreFlavor.DesktopClr, KreArchitecture.amd64, "http://localhost:5002/", false)]
         //https://github.com/aspnet/KRuntime/issues/642