A Microsoft file hosting and synchronization service.
Hello DonaldLoux,
Welcome to the Microsoft community, it looks like the backup of OneDrive on your laptop caused you some inconvenience by syncing some files that you didn't want to sync, I understand how you feel.
I would recommend that you check the OneDrive sync options again to make sure that all backups have been turned off properly.
Open OneDrive settings (select the OneDrive cloud icon in your notification area, and then select the OneDrive Help & Settings icon then Settings.)
- Open OneDrive settings (select the OneDrive cloud icon in your notification area, and then select the OneDrive Help & Settings icon then Settings.)
- Go to the Sync and backup tab.
- Select Manage backup.
To end backing up a folder, toggle any folder that says backed up, and then select Save changes.
Then in the “Sync & Backup” section, below “Manage Backups”, make sure the “Save screenshots to OneDrive” section is unchecked.
You can refer to Back up your folders with OneDrive - Microsoft Support
Once you've saved your settings, OneDrive should have turned off all automatic synchronization, so feel free to share any results or ask any questions.
Best regards,
Ian - MSFT | Microsoft Community Support Specialist