A Microsoft file hosting and synchronization service.
Hi, Paul Freeman
Sorry for this frustrating situation. Here are some suggestions you can try:
Stop using the affected PC immediately. Do not install programs, download files, run cleanup tools, or reset Windows. Deleted data can remain recoverable until new activity overwrites it.
Check the Windows Recycle Bin. Locally available OneDrive files deleted during synchronization may also have been placed there.
Right-click the original Documents or Desktop folder, select Properties > Previous Versions, and look for a copy created by File History, Windows Backup, or a restore point.
If no backup exists, use Windows File Recovery from the Microsoft Store, saving recovered files to a different physical drive. The source and destination drives must be different.
Because these records are critical, it is recommended that you stop before attempting repeated recovery scans and contact a reputable professional data-recovery service.