Debugging broken for x64 platform in 16.7.x-16.8.0 (The parameter is incorrect E_INVALIDARG)

I’m experiencing The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) pop-up messages when attempting to run or debug python scripts in Visual Studio 2019 16.7.x-16.8.0. This used to work fine in previous versions of VS2019. The problem seem to be related to the x64 vs. Any CPU platform used to include the python project into the VS2019 solution.

Related issues: https://github.com/microsoft/PTVS/issues/6204 & https://github.com/microsoft/PTVS/issues/6278 (both are closed).

The exception occurs in the following scenarios:

• When opening the “Debug” and “Publish” configuration pages for the project.
• When attempting to run a script using “Start without Debugging” or “Start with Debugging”

Details:

[Window Title]
devenv.exe

[Main Instruction]
An unexpected error occurred

[Expanded Information]
Build: 16.8.20241.2

System.ArgumentException: The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))
   at EnvDTE.ConfigurationManager.get_ActiveConfiguration()
   at Microsoft.PythonTools.Project.PythonProjectNode.SetCurrentConfiguration()
   at Microsoft.VisualStudioTools.Project.ProjectNode.GetMsBuildProperty(String propertyName, Boolean resetCache)
   at Microsoft.VisualStudioTools.Project.ProjectNode.GetProjectProperty(String propertyName, Boolean resetCache)
   at Microsoft.PythonTools.Project.CondaEnvCreateProjectInfoBar.<CheckAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.PythonTools.Project.PythonProjectNode.<TriggerInfoBarsAsync>d__107.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.PythonTools.Infrastructure.VSTaskExtensions.<HandleAllExceptions>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.VisualStudio.Telemetry.WindowsErrorReporting.WatsonReport.GetClrWatsonExceptionInfo(Exception exceptionObject)

Minimal project to reproduce: https://github.com/forderud/CMakePTVS

[huguesv]

Thanks for the minimal project, I am now able to reproduce.

[masariello]

This issue shows up also as a “false error” during builds of solutions that contain a pyproj and applies to all VS 16.8.x versions, up to and including 16.8.4

Error: The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))

It would be really useful if it was fixed. Thank you