Hi JohnC,

I will try that one later today. But I installed Windows clean anyway, so I'm afraid repairing won't help :( so far all tries to repair didn't have any success...

Hi heavywater,

I tried but got the message that the command "Get-AppXPackage" is either freshly written or couldn't be found.

Hi,

I just read the thread of Louise M (https://www.tenforums.com/general-discussion/10231-windows-10-wont-let-me-open-start-button-anything-else.html) who had a quite similar problem to mine.
...