diff --git a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Services/WinRTExtensionService.cs b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Services/WinRTExtensionService.cs
index bcf004347a..b98edb8eb7 100644
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Services/WinRTExtensionService.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Services/WinRTExtensionService.cs
@@ -152,9 +152,15 @@ public partial class WinRTExtensionService : IExtensionService, IDisposable
         }
     }
 
+    // C#/WinRT projects S_OK as null and every failed HRESULT as a non-null Exception.
+    internal static bool IsSuccessfulPackageOperation(bool isComplete, Exception? errorCode)
+    {
+        return isComplete && errorCode is null;
+    }
+
     private void Catalog_PackageInstalling(PackageCatalog sender, PackageInstallingEventArgs args)
     {
-        if (args.IsComplete)
+        if (IsSuccessfulPackageOperation(args.IsComplete, args.ErrorCode))
         {
             _ = HandlePackageInstalledAsync(args.Package);
         }
@@ -162,7 +168,7 @@ public partial class WinRTExtensionService : IExtensionService, IDisposable
 
     private void Catalog_PackageUninstalling(PackageCatalog sender, PackageUninstallingEventArgs args)
     {
-        if (args.IsComplete)
+        if (IsSuccessfulPackageOperation(args.IsComplete, args.ErrorCode))
         {
             _ = HandlePackageUninstalledAsync(args.Package);
         }
@@ -170,7 +176,7 @@ public partial class WinRTExtensionService : IExtensionService, IDisposable
 
     private void Catalog_PackageUpdating(PackageCatalog sender, PackageUpdatingEventArgs args)
     {
-        if (args.IsComplete)
+        if (IsSuccessfulPackageOperation(args.IsComplete, args.ErrorCode))
         {
             _ = HandlePackageUpdatedAsync(args.TargetPackage);
         }
diff --git a/src/modules/cmdpal/Tests/Microsoft.CmdPal.UI.ViewModels.UnitTests/WinRTExtensionServiceTests.cs b/src/modules/cmdpal/Tests/Microsoft.CmdPal.UI.ViewModels.UnitTests/WinRTExtensionServiceTests.cs
new file mode 100644
index 0000000000..0fdec186e1
--- /dev/null
+++ b/src/modules/cmdpal/Tests/Microsoft.CmdPal.UI.ViewModels.UnitTests/WinRTExtensionServiceTests.cs
@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using Microsoft.CmdPal.UI.ViewModels.Services;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Microsoft.CmdPal.UI.ViewModels.UnitTests;
+
+[TestClass]
+public class WinRTExtensionServiceTests
+{
+    [TestMethod]
+    public void IsSuccessfulCompletion_IncompleteOperation_ReturnsFalse()
+    {
+        Assert.IsFalse(WinRTExtensionService.IsSuccessfulPackageOperation(isComplete: false, errorCode: null));
+    }
+
+    [TestMethod]
+    public void IsSuccessfulCompletion_CompletedOperationWithoutError_ReturnsTrue()
+    {
+        Assert.IsTrue(WinRTExtensionService.IsSuccessfulPackageOperation(isComplete: true, errorCode: null));
+    }
+
+    [TestMethod]
+    public void IsSuccessfulCompletion_CompletedOperationWithAnyError_ReturnsFalse()
+    {
+        var error = new InvalidOperationException("Any projected package operation failure");
+
+        Assert.IsFalse(WinRTExtensionService.IsSuccessfulPackageOperation(isComplete: true, errorCode: error));
+    }
+}