Interactive corner --> desktop is automatically activated independent of MAcOS version and Interactive corner is not set.

[William_T]

When I am at work then without warning my screen clears and desktop is shown.

 

[tensixturtle]

Can you try setting a different function for the interactive corner, see if it works, and then set it back to nothing and see if that fixes it? I don't know which device you are using, but is there a chance you might be accidentally be accidentally activating the Show Desktop function with a function key or trackpad gesture?

 

[William_T]

I'll test your advise

 

[William_T]

Thanks. Until now no problems anymore.