Out put pane description: "Starting test discovery for requested test run ========== Starting test discovery ========== Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Failed to negotiate protocol, waiting for response timed out after 90 seconds. This may occur due to machine slowness, please set environment variable VSTEST_CONNECTION_TIMEOUT to increase timeout. at Microsoft.VisualStudio.TestPlatform.CommunicationUtilities.TestRequestSender.CheckVersionWithTestHost() at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable`1 sources, String runSettings) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyDiscoveryManager.DiscoverTests(DiscoveryCriteria discoveryCriteria, ITestDiscoveryEventsHandler2 eventHandler) ========== Test discovery aborted: 0 Tests found in 1.5 min ========== ========== Starting test run ========== Failed to negotiate protocol, waiting for response timed out after 90 seconds. This may occur due to machine slowness, please set environment variable VSTEST_CONNECTION_TIMEOUT to increase timeout. Failed to negotiate protocol, waiting for response timed out after 90 seconds. This may occur due to machine slowness, please set environment variable VSTEST_CONNECTION_TIMEOUT to increase timeout. ========== Test run aborted: 0 Tests (0 Passed, 0 Failed, 0 Skipped) run in < 1 ms =========="

I was upgrading the application from .NET Core 3.1 to .NET 6 and my test project is not able to run the test cases.