FreeFileSync Forum

Try as described here: https://winbuzzer.com/2020/07/24/how-to-onedrive-folder-sync-any-directory-via-mklink-xcxwbt/

@xCSxXenon, that was helpful as it remindend me of a proceeding I already had made some years ago, using a symlink to my folder to be synced to OneDrive. You achieve that by using the built in feature of mklink in Windows 10, like described here:
https://winbuzzer.com/2020/07/24/how-to-onedrive ...

One more for Microsoft OneDrive