FreeFileSync Forum

You chose to use non platform-compatible file names, and you are the only one that knows how to safely rename files in your use-case. So, you can better solve the problem yourself upfront (before running a sync), instead of expecting FFS to solve a <shields_up> problem you created yourself ...

This has been an issue for me too
Syncing between two cloud based file stores (AWS Workdocs, and Google Drive).
Mac users have create directories and files with leading and trailing spaces, and this is rejected by GoogleDrive.
Ive been abel to mount the AWS Workdocs on windows, and thus on WSL and ...