diff --git a/Versions.props b/Versions.props
index c57c84a..1b69998 100644
--- a/Versions.props
+++ b/Versions.props
@@ -11,7 +11,7 @@
     <TunnelVisionLabsReferenceAssemblyAnnotatorVersion>1.0.0-alpha.160</TunnelVisionLabsReferenceAssemblyAnnotatorVersion>
     <XunitAnalyzersVersion>1.15.0-pre.10</XunitAnalyzersVersion>
     <XunitV2Version>2.8.2-pre.12</XunitV2Version>
-    <XunitV3Version>0.1.1-pre.475</XunitV3Version>
+    <XunitV3Version>0.1.1-pre.480</XunitV3Version>
   </PropertyGroup>
 
 </Project>
diff --git a/src/xunit.runner.visualstudio/Utility/AssemblyRunInfo.cs b/src/xunit.runner.visualstudio/Utility/AssemblyRunInfo.cs
index 4d39177..4c2e167 100644
--- a/src/xunit.runner.visualstudio/Utility/AssemblyRunInfo.cs
+++ b/src/xunit.runner.visualstudio/Utility/AssemblyRunInfo.cs
@@ -6,17 +6,14 @@ namespace Xunit.Runner.VisualStudio;
 
 public class AssemblyRunInfo
 {
-	public AssemblyRunInfo(
+	AssemblyRunInfo(
 		XunitProject project,
 		RunSettings runSettings,
 		string assemblyFileName,
-		IList<TestCase>? testCases = null)
+		AssemblyMetadata assemblyMetadata,
+		IList<TestCase>? testCases)
 	{
-		Assembly = new XunitProjectAssembly(project)
-		{
-			AssemblyFileName = assemblyFileName,
-			AssemblyMetadata = AssemblyUtility.GetAssemblyMetadata(assemblyFileName),
-		};
+		Assembly = new XunitProjectAssembly(project, assemblyFileName, assemblyMetadata);
 		TestCases = testCases;
 
 		runSettings.CopyTo(Assembly.Configuration);
@@ -25,4 +22,17 @@ public AssemblyRunInfo(
 	public XunitProjectAssembly Assembly { get; }
 
 	public IList<TestCase>? TestCases { get; }
+
+	public static AssemblyRunInfo? Create(
+		XunitProject project,
+		RunSettings runSettings,
+		string assemblyFileName,
+		IList<TestCase>? testCases = null)
+	{
+		var metadata = AssemblyUtility.GetAssemblyMetadata(assemblyFileName);
+		if (metadata is null || metadata.XunitVersion == 0)
+			return null;
+
+		return new(project, runSettings, assemblyFileName, metadata, testCases);
+	}
 }
diff --git a/src/xunit.runner.visualstudio/VsTestRunner.cs b/src/xunit.runner.visualstudio/VsTestRunner.cs
index 69977d7..dc91481 100644
--- a/src/xunit.runner.visualstudio/VsTestRunner.cs
+++ b/src/xunit.runner.visualstudio/VsTestRunner.cs
@@ -182,11 +182,15 @@ async Task DiscoverTests<TVisitor>(
 				foreach (var assemblyFileNameCanBeWithoutAbsolutePath in sources)
 				{
 					var assemblyFileName = Path.GetFullPath(assemblyFileNameCanBeWithoutAbsolutePath);
-					var assembly = new XunitProjectAssembly(project)
-					{
-						AssemblyFileName = assemblyFileName,
-						AssemblyMetadata = AssemblyUtility.GetAssemblyMetadata(assemblyFileName),
-					};
+					var metadata = AssemblyUtility.GetAssemblyMetadata(assemblyFileName);
+					// Silently ignore anything which doesn't look like a test project, because reporting it just throws
+					// lots of warnings into the test output window as Test Explorer asks you to enumerate tests for every
+					// assembly you build in your solution, not just the ones with references to this runner.
+					if (metadata is null || metadata.XunitVersion == 0)
+						return;
+
+					var assembly = new XunitProjectAssembly(project, assemblyFileName, metadata);
+
 					var configWarnings = new List<string>();
 					ConfigReader.Load(assembly.Configuration, assembly.AssemblyFileName, assembly.ConfigFileName, configWarnings);
 					runSettings.CopyTo(assembly.Configuration);
@@ -203,6 +207,9 @@ async Task DiscoverTests<TVisitor>(
 
 					await using var sourceInformationProvider = new VisualStudioSourceInformationProvider(assembly.AssemblyFileName, diagnosticMessageSink);
 					await using var controller = XunitFrontController.ForDiscoveryAndExecution(assembly, sourceInformationProvider, diagnosticMessageSink);
+					if (controller is null)
+						return;
+
 					var discoveryOptions = _TestFrameworkOptions.ForDiscovery(assembly.Configuration);
 					discoveryOptions.SetIncludeSourceInformation(true);
 					if (!await DiscoverTestsInAssembly(controller, logger, testPlatformContext, runSettings, visitorFactory, visitComplete, assembly, discoveryOptions))
@@ -239,40 +246,35 @@ async Task<bool> DiscoverTestsInAssembly<TVisitor>(
 				var reporterMessageHandler = await GetRunnerReporter(logger, runSettings, [assembly.AssemblyFileName]).CreateMessageHandler(new VisualStudioRunnerLogger(logger), diagnosticMessageSink);
 				fileName = Path.GetFileNameWithoutExtension(assembly.AssemblyFileName);
 
-				if (assembly.AssemblyMetadata.XunitVersion == 0)
-					diagnosticMessageSink.OnMessage(new _DiagnosticMessage("Skipping: {0} (no reference to xUnit.net)", fileName));
-				else
+				using var visitor = visitorFactory(assembly.AssemblyFileName, controller, discoveryOptions);
+				var totalTests = 0;
+				var appDomain = assembly.Configuration.AppDomain ?? AppDomainDefaultBehavior;
+				var usingAppDomains = controller.CanUseAppDomains && appDomain != AppDomainSupport.Denied;
+				reporterMessageHandler.OnMessage(new TestAssemblyDiscoveryStarting
 				{
-					using var visitor = visitorFactory(assembly.AssemblyFileName, controller, discoveryOptions);
-					var totalTests = 0;
-					var appDomain = assembly.Configuration.AppDomain ?? AppDomainDefaultBehavior;
-					var usingAppDomains = controller.CanUseAppDomains && appDomain != AppDomainSupport.Denied;
-					reporterMessageHandler.OnMessage(new TestAssemblyDiscoveryStarting
-					{
-						AppDomain = usingAppDomains ? AppDomainOption.Enabled : AppDomainOption.Disabled,
-						Assembly = assembly,
-						DiscoveryOptions = discoveryOptions,
-						ShadowCopy = assembly.Configuration.ShadowCopyOrDefault,
-					});
+					AppDomain = usingAppDomains ? AppDomainOption.Enabled : AppDomainOption.Disabled,
+					Assembly = assembly,
+					DiscoveryOptions = discoveryOptions,
+					ShadowCopy = assembly.Configuration.ShadowCopyOrDefault,
+				});
 
-					try
-					{
-						var findSettings = new FrontControllerFindSettings(discoveryOptions);
-						controller.Find(visitor, findSettings);
+				try
+				{
+					var findSettings = new FrontControllerFindSettings(discoveryOptions);
+					controller.Find(visitor, findSettings);
 
-						totalTests = visitor.Finish();
+					totalTests = visitor.Finish();
 
-						visitComplete?.Invoke(assembly.AssemblyFileName, controller, discoveryOptions, visitor);
-					}
-					finally
+					visitComplete?.Invoke(assembly.AssemblyFileName, controller, discoveryOptions, visitor);
+				}
+				finally
+				{
+					reporterMessageHandler.OnMessage(new TestAssemblyDiscoveryFinished
 					{
-						reporterMessageHandler.OnMessage(new TestAssemblyDiscoveryFinished
-						{
-							Assembly = assembly,
-							DiscoveryOptions = discoveryOptions,
-							TestCasesToRun = totalTests,
-						});
-					}
+						Assembly = assembly,
+						DiscoveryOptions = discoveryOptions,
+						TestCasesToRun = totalTests,
+					});
 				}
 			}
 			catch (Exception e)
@@ -394,7 +396,8 @@ public void RunTests(
 				() =>
 					tests
 						.GroupBy(testCase => testCase.Source)
-						.Select(group => new AssemblyRunInfo(project, runSettings, group.Key, group.ToList()))
+						.Select(group => AssemblyRunInfo.Create(project, runSettings, group.Key, group.ToList()))
+						.WhereNotNull()
 						.ToList()
 			).GetAwaiter().GetResult();
 		}
@@ -425,7 +428,7 @@ public void RunTests(
 			// before returning from this function.
 			RunTests(
 				runContext, frameworkHandle, logger, testPlatformContext, runSettings,
-				() => sources.Select(source => new AssemblyRunInfo(project, runSettings, Path.GetFullPath(source))).ToList()
+				() => sources.Select(source => AssemblyRunInfo.Create(project, runSettings, Path.GetFullPath(source))).WhereNotNull().ToList()
 			).GetAwaiter().GetResult();
 		}
 
@@ -499,6 +502,9 @@ async Task RunTestsInAssembly(
 
 				await using var sourceInformationProvider = new VisualStudioSourceInformationProvider(assemblyFileName, diagnosticSink);
 				await using var controller = XunitFrontController.ForDiscoveryAndExecution(runInfo.Assembly, sourceInformationProvider, diagnosticSink);
+				if (controller is null)
+					return;
+
 				var testCasesMap = new Dictionary<string, TestCase>();
 				var testCaseSerializations = new List<string>();
 				if (runInfo.TestCases is null || !runInfo.TestCases.Any())