All unit tests Inconclusive when run in VS 2019 : <p>I'm using <code>Unit Test Explorer</code> and <code>Unit Test Sessions</code> to run my tests and suddenly get the below error.</p>

<p>When running in <code>Test -&gt; Test explorer</code>, the tests do not run at all and I see no errors.</p>

<p>In both cases there is nothing in <code>Output</code> window. I've reinstalled R#, cleared VS cache (in <code>%USERPROFILE%\AppData\Local\Microsoft</code>), restarted windows, restarted VS.</p>

<pre><code>2019.10.25 14:54:08.058   ERROR Remote: An exception occurred while invoking executor 'executor://mstestadapter/v2': Method not found: 'Void Microsoft.VisualStudio.TestTools.UnitTesting.TestContext.set_CancellationTokenSource(System.Threading.CancellationTokenSource)'.

--- EXCEPTION #1/1 [LoggerException]
Message = “Remote: An exception occurred while invoking executor 'executor://mstestadapter/v2': Method not found: 'Void Microsoft.VisualStudio.TestTools.UnitTesting.TestContext.set_CancellationTokenSource(System.Threading.CancellationTokenSource)'.”
ExceptionPath = Root
ClassName = JetBrains.Util.LoggerException
HResult = COR_E_APPLICATION=80131600
StackTraceString = “
  at JetBrains.ReSharper.UnitTesting.MSTest.Provider.New.TestHost.TestHostMsTestRunner.TestExecutionEventHandler.HandleLogMessage(TestMessageLevel level, String message)
     at Microsoft.TestPlatform.VsTestConsole.TranslationLayer.VsTestConsoleRequestSender.SendMessageAndListenAndReportTestResults(String messageType, Object payload, ITestRunEventsHandler eventHandler, ITestHostLauncher customHostLauncher)
    (...)
</code></pre>
