diff --git a/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs b/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs
index 259903d3d4..9d2b627aff 100644
--- a/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs
+++ b/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs
@@ -652,7 +652,7 @@ private bool RunTestInitializeMethod(object classInstance, TestResult result)
         // Prefix the exception message with the exception type name as prefix when exception is not assert exception.
         string exceptionMessage = realException is UnitTestAssertException
             ? realException.TryGetMessage()
-            : ExceptionHelper.GetFormattedExceptionMessage(realException);
+            : realException.GetFormattedExceptionMessage();
         string errorMessage = string.Format(
             CultureInfo.CurrentCulture,
             Resource.UTA_InitMethodThrows,
diff --git a/src/Adapter/MSTest.TestAdapter/Execution/TestMethodRunner.cs b/src/Adapter/MSTest.TestAdapter/Execution/TestMethodRunner.cs
index 017f45b100..1b68d21d94 100644
--- a/src/Adapter/MSTest.TestAdapter/Execution/TestMethodRunner.cs
+++ b/src/Adapter/MSTest.TestAdapter/Execution/TestMethodRunner.cs
@@ -447,7 +447,7 @@ private static UTF.UnitTestOutcome GetAggregateOutcome(List<TestResult> results)
         UTF.UnitTestOutcome aggregateOutcome = results[0].Outcome;
         foreach (TestResult result in results)
         {
-            aggregateOutcome = UnitTestOutcomeExtensions.GetMoreImportantOutcome(aggregateOutcome, result.Outcome);
+            aggregateOutcome = aggregateOutcome.GetMoreImportantOutcome(result.Outcome);
         }
 
         return aggregateOutcome;
diff --git a/src/Platform/Microsoft.Testing.Extensions.MSBuild/TestingPlatformBuilderHook.cs b/src/Platform/Microsoft.Testing.Extensions.MSBuild/TestingPlatformBuilderHook.cs
index 53e32087d3..badb923f0d 100644
--- a/src/Platform/Microsoft.Testing.Extensions.MSBuild/TestingPlatformBuilderHook.cs
+++ b/src/Platform/Microsoft.Testing.Extensions.MSBuild/TestingPlatformBuilderHook.cs
@@ -8,5 +8,5 @@ namespace Microsoft.Testing.Platform.MSBuild;
 public static class TestingPlatformBuilderHook
 {
     public static void AddExtensions(ITestApplicationBuilder testApplicationBuilder, string[] _)
-        => MSBuildExtensions.AddMSBuild(testApplicationBuilder);
+        => testApplicationBuilder.AddMSBuild();
 }
diff --git a/test/UnitTests/MSTestAdapter.UnitTests/Extensions/UnitTestOutcomeExtensionsTests.cs b/test/UnitTests/MSTestAdapter.UnitTests/Extensions/UnitTestOutcomeExtensionsTests.cs
index 852811883e..77c056e763 100644
--- a/test/UnitTests/MSTestAdapter.UnitTests/Extensions/UnitTestOutcomeExtensionsTests.cs
+++ b/test/UnitTests/MSTestAdapter.UnitTests/Extensions/UnitTestOutcomeExtensionsTests.cs
@@ -62,25 +62,25 @@ public void ToUnitTestResultsForUnknownTestResultsConvertsToErrorUnitTestResults
 
     public void GetMoreImportantOutcomeShouldReturnFailIfTwoOutcomesAreFailedAndInconclusive()
     {
-        UTF.UnitTestOutcome resultOutcome = UnitTestOutcomeExtensions.GetMoreImportantOutcome(UTF.UnitTestOutcome.Failed, UTF.UnitTestOutcome.Inconclusive);
+        UTF.UnitTestOutcome resultOutcome = UTF.UnitTestOutcome.Failed.GetMoreImportantOutcome(UTF.UnitTestOutcome.Inconclusive);
         Verify(resultOutcome == UTF.UnitTestOutcome.Failed);
     }
 
     public void GetMoreImportantOutcomeShouldReturnInconclusiveIfTwoOutcomesArePassedAndInconclusive()
     {
-        UTF.UnitTestOutcome resultOutcome = UnitTestOutcomeExtensions.GetMoreImportantOutcome(UTF.UnitTestOutcome.Passed, UTF.UnitTestOutcome.Inconclusive);
+        UTF.UnitTestOutcome resultOutcome = UTF.UnitTestOutcome.Passed.GetMoreImportantOutcome(UTF.UnitTestOutcome.Inconclusive);
         Verify(resultOutcome == UTF.UnitTestOutcome.Inconclusive);
     }
 
     public void GetMoreImportantOutcomeShouldReturnFailedIfTwoOutcomesArePassedAndFailed()
     {
-        UTF.UnitTestOutcome resultOutcome = UnitTestOutcomeExtensions.GetMoreImportantOutcome(UTF.UnitTestOutcome.Passed, UTF.UnitTestOutcome.Failed);
+        UTF.UnitTestOutcome resultOutcome = UTF.UnitTestOutcome.Passed.GetMoreImportantOutcome(UTF.UnitTestOutcome.Failed);
         Verify(resultOutcome == UTF.UnitTestOutcome.Failed);
     }
 
     public void GetMoreImportantOutcomeShouldReturnFailedIfBothOutcomesAreFailed()
     {
-        UTF.UnitTestOutcome resultOutcome = UnitTestOutcomeExtensions.GetMoreImportantOutcome(UTF.UnitTestOutcome.Failed, UTF.UnitTestOutcome.Failed);
+        UTF.UnitTestOutcome resultOutcome = UTF.UnitTestOutcome.Failed.GetMoreImportantOutcome(UTF.UnitTestOutcome.Failed);
         Verify(resultOutcome == UTF.UnitTestOutcome.Failed);
     }
 }