Hi,
I get what you're saying, your /Documents folder for 3DSMax is set up to OneDrive. This could be accidental or on purpose by someone who doesn't really understand what they were doing. It happens.
Their OneDrive folder would fill up with all of this:

Each time you open 3DSMax it would be updating, loading and saving from the cloud.
This is all well and good, but unfortunately Autodesk do not own OneDrive. Microsoft do.
It's like a ticking timebomb of saving files to the Cloud, in a limited, paid for realm.
If you want to only save your renders or CGIs remotely on the cloud, it's best to set up your system to do it like that, through 3DSMax. Not OneDrive. They'll of course tell you your virtual space is running out.
C:\Users\YourUsernameHere\Documents\3ds Max 20** should always reside on your local C:/Drive
Whomever set up your System Paths to a Onedrive account, or worse still, Installed 3DSMax onto OneDrive, needs to be dragged outside and flogged.
Here is where my Paths are pointed:

These Buttons are used to set up your Project folder Paths:

Your /Documents folder, might be pointing to OneDrive here somewhere on your PC?
Have a look. And remove or change it.
Next thing I'd try is:

After that; The simplist thing to do would maybe be to uninstall the Product from your C:/Drive and (Or) OneDrive and reinstall properly.
Regards,
Darawork
AutoDesk User
Windows 11, 3DS Max 2026, Revit 2026, AutoCad 2026, Dell Precision 7875 nVidia - Quadro RTX4000 ATA - AMD Ryzen Threadripper PRO 7965WX 24-Cores - 128GB RAM