Hello Olga Dolder-Prozorovskaya ,

This is likely to be a permissions issue and that you are not running Studio as admin.

Please restart Studio by right-clicking and selecting Run As Administrator.

I would also suggest (at least temporarily) deactivating the sync with your One Drive folder before running Studio.

Hello Olga Dolder-Prozorovskaya ,

This is likely to be a permissions issue and that you are not running Studio as admin.

Please restart Studio by right-clicking and selecting Run As Administrator.

I would also suggest (at least temporarily) deactivating the sync with your One Drive folder before running Studio.

Hej Steven! Jeg have tried to run Trados as admin but then it wouldn't open the editor file and I I just could do nothing. I closed Trados and opened against in a normal way. Now I can open the file for editing. The error message is still her. It started after I synchronized Google Drive and it was installed on my PC.  I have now removed Google drive and stopped all synchronization but the error message comes up when I try to save the doc and when I try to close Trados.

I have the same problem too. I upgraded my Trados studio Freelance 2019 to the latest 2021 and when I try to save my project, I receive the same error. I´m stuck with this problem for 2 weeks already!!!! Moreover, in my notifications I have a message saying I don´t have internet access although my internet is working perfectly....

Rename this folder (just add _old to the end or something, it's not important what you rename it to) and restart Studio:

c:\Users\[USERNAME]\AppData\Roaming\SDL\SDL Trados Studio\14.0.0.0

rename de folder [drive]:\windows\users\[username]\OneDrive\Documents\Studio 2021 (if you use or used Microsoft OneDrive in the past] or the folder [drive]:\windows\users\[username]\Documents\Studio 2021 for anything else. 

Rename 

C:\Users\olgad\OneDrive\Documents/Studio2021/AutoSave/4c1096a1 to 

C:\Users\olgad\OneDrive\Documents/Studio2021/AutoSave/old_4c1096a1

Done. Nothing has changed...

In fact,when I go to C: users/onedrive/documents/ >>> only Studio 2019 appears... not 2021...???