Click the OneDrive cloud icon by the clock. It usually names the file it's stuck on.
- Read the icon. Arrows for over a day = stuck. Red X = stopped (click it for the reason). Yellow triangle = sign in again. No icon = OneDrive isn't running; open it from the Start menu.
- Rename blocked files. These characters can't be used in file or folder names: " * : < > ? / \ |. Also no spaces at the start or end of a name.
- Shorten deep folders. Very long folder paths stop sync. Move the folder up a level or two rather than renaming the file.
- Reset OneDrive. Press Windows + R and paste
%localappdata%\Microsoft\OneDrive\onedrive.exe /reset. Your files stay; OneDrive re-syncs, which can take a while. - Check the account. Make sure you're signed in with your work email, not a personal Microsoft account.
Full guide: https://sagesolutionsllc.net/blog/onedrive-not-syncing/
Still stuck? Reply to your ticket or email help@sagesolutionsllc.net. Business down or a security issue? Call (646) 886-7604 and press 1.