By default OneDrive syncs important files, but that is causing me problems.
e.g. I installed a new genealogy program and the associated database went to OneDrive, however the instructions for this program says that OneDrive must never be used with it because it can't sync the program with the master databases online.

I have other issues as well, so I want to put everything back to the PC.

There are numerous tips found on Google and they all say first unlink the PC. Then it says to open File explorer and move the files. However as soon as you unlink OneDrive, File explorer cannot see OneDrive.

I tried unticking the "Files on Demand" box, and that says "all OneDrive files and folders will download to they PC", but they don't.

I also don't know where some of the files came from in C drive.

Any assistance would be appreciated.

Thanks