I had encountered with a problem, when I had installed another operating system in other drive, while I had OneDrive folder synchronized in my old windows.
With New windows I was unable to access the OneDrive folder. I was getting error “OneDrive folder is not accessible”.
I had logged in to old windows and uninstalled my OneDrive from Add & Remove programs of windows.
After uninstalling OneDrive from Old windows, it is now accessible in new windows and then I had selected the same location to synchronize OneDrive from new windows.