Backup your Desktop, Documents and other important folders on OneDrive

If your OneDrive is not connected with your work account, go to the Windows search bar and type OneDrive

Sing in with your work of school account

Right click on the OneDrive icon in the task bar (bottom right corner):

Click on Settings:

Click on Sync and backup and then Manage backup:

Make sure that Desktop and Documents are selected:

N.B. If you have other important files that are not in the Documents or Desktop folders, you have to move them to the OneDrive folder, Desktop or Documents and let them synchronize!