A Microsoft file hosting and synchronization service.
For this SharePoint/OneDrive for Business sync and sign-in failure, use this order:
- Confirm the SharePoint library can still be synced.
- Sign in to Microsoft 365 with the work or school account.
- Open the SharePoint document library.
- If Sync is missing, the library may not be configured for syncing.
- If an administrator manages the library, check Library settings > Advanced settings > Offline Client Availability and make sure it is set to Yes.
- Verify the correct work or school credentials are being used.
- Sign in to the SharePoint Online site first.
- Use the same Microsoft 365 credentials that are associated with the library.
- Select Keep me signed in when prompted.
- Run Microsoft Support and Recovery Assistant.
- This is specifically recommended for OneDrive sign-in problems caused by folder name conflicts or OneNote notebook sync issues.
- In the tool, select OneDrive for Business > I need help syncing my OneDrive files.
- Repair Office before reinstalling again.
- Repairing the Office installation is recommended before another uninstall/reinstall cycle and can resolve OneDrive for work or school issues.
- Reset OneDrive.
- If the assistant does not fix the issue, reset OneDrive.
- This can help when the problem is not caused by sync conflicts.
- If sign-in still fails, uninstall and reinstall OneDrive.
- The documented sign-in troubleshooting path for OneDrive includes uninstalling OneDrive from Add or remove programs, then installing the latest OneDrive app again.
- Resetting or uninstalling OneDrive does not remove cloud data.
- If the desktop app still cannot sign in, check broader sign-in blockers.
- Confirm the account can sign in successfully.
- Make sure the latest OneDrive version is installed.
- Check whether a firewall, VPN configuration, or internet provider is blocking required OneDrive connectivity.
- If others can sync the same library but this device still cannot, reset Internet Explorer settings.
- This is a documented troubleshooting step when custom Internet options interfere with sync.
- Warning: resetting Internet Explorer removes all previous Internet Options customizations and cannot be undone.
- If the issue remains unresolved, ask the IT administrator to create a Microsoft support incident.