I had a serious problems with OneDrive on Windows 8.1. I wasn’t able to access my folder or OneDrive settings (to at least login to OneDrive account and start syncing). I wasn’t evan able to start OneDrive or see its icon in file explorer. Ultimately, I gave up and “resolved” my problem by upgrading system to Windows 10. However, you may use this article as a kind of checklist to see, if you have checked everything, when resolving your problems with OneDrive under Windows 8.1.