Dear Jim,
You could re-install Onedrive client in this way;
Do you know how work with the "Regedit"?
So, with the keys combinations (Windows + R), you'll open the "Run" windows, then type: regedit
We need to find Onedrive folder and delete.
you will find it in this path:
HKEY_CURRENT_USER\Software\Microsoft\
Expand Microsoft folder click on the "arrow", inside you'll see the Onedrive folder, click with "Right-Click" over Onedrive folder and delete all.
This process only remove Onedrive configuration, the data will be fine.
After, uninstall Onedrive from Control Panel and re-install again with the file that you'll download in this official Microsoft Support:
https://support.office.com/en-us/article/onedri...
Download the last Production Ring version: 20.064.0329.0008 and install it.
Finally, It is possible that you need to put your credentials again, then when you select the folder location for Onedrive (use default folder), maybe will appears a message that says "This folder already has information/data", so, in the same way, select that location and accept.
Regards,
Renzo.