A Microsoft file hosting and synchronization service.
- Restore the OneDrive app first so the menu bar icon returns:
- Open Applications.
- Find OneDrive.
- Right-click it and select Show Package Contents.
- Open Contents > Resources.
- Double-click ResetOneDriveApp.command or ResetOneDriveAppStandalone.command.
- Start OneDrive again and complete setup.
- If OneDrive starts but the account link is broken, re-link it:
- Click the OneDrive cloud icon in the menu bar.
- Go to Help & Settings > Preferences > Account.
- Select Unlink this Mac.
- Sign in again.
- When prompted that a folder already exists, select Use this folder for the current folder that matches the online OneDrive.
- If sign-in still does not complete correctly, clear cached credentials:
- Open Keychain Access.
- Search for OneDrive.
- Delete OneDrive Cached Credential.
- If needed, use Window > Keychain Access, then File > Delete Keychain [OneDrive/Office/MS], and click Delete References.
- Start OneDrive and sign in again.
- To identify and remove the old non-syncing folder:
- In OneDrive, if the message says "You’re signed in to 2 versions", click Show in Finder.
- In /Library/CloudStorage, open each OneDrive folder.
- If one folder shows a Finder banner with a Delete button, click Delete. That folder is from the previous OneDrive version and is no longer active.
- If there is no Delete banner:
- Open OneDrive preferences > Account.
- Select Unlink this Mac.
- Run OneDrive again to complete setup.
- Before deleting any duplicate folder manually, confirm the active folder is the one that:
- is syncing with OneDrive online, and
- contains the files expected in the current account.
Unlinking and re-linking does not delete data. It only disconnects the Mac from OneDrive temporarily while setup is repaired.