Hi folks,

I use SDL Trados Studio 2021 Freelance Plus SR2 - 16.2.9.9198.

When I save my translation with Ctrl+S, the below shown error message pops up from time to time:


It is not always there: when I open Trados first, it works fine for an hour or two. Then,  just out of sudden, the above message pops up.

I have compared the path before and after the error message appears.

Before: 
 


And after:
:

Then I have to close Trados and re-open it again. Once Trados has started, the folder in question appears there again (as shown in the "Before" image) and the file saves well. What can be the culprit of this behavior?
*I don't use any third-party antivirus software other than that built-in in Windows 10.