OneDrive Sync Error (code 504035)

[Frank Schaefer 0]

Dear all,

upon trying to sync with my existing OneDrive backup from the desktop application 6.0.4 (268), I receive the error message "Something went wrong while syncing to OneDrive. Error code: 504035". Until c. 2 days ago, this was not the case.

I already tried resetting the sync and resetting the sync including deletion of the backup on OneDrive. Does not make a difference, though, I still get the same error message.

How can I set up the sync again?

Thank you and regards,

Frank

Edited February 5 by Frank Schaefer
More concise specification of problem

[Frank Schaefer 0]

Update: I am still experiencing sync errors, however, the error code now changed to 504401.

Any thought on how to solve this would be greatly appreciated. Thank you.