
OneDrive Sync Proxy Error: Troubleshooting Checklist
If you see 'Proxy error' or 'Cannot sync' in OneDrive while connected through a corporate or home...
Software troubleshooting desk

If you see 'Proxy error' or 'Cannot sync' in OneDrive while connected through a corporate or home...

You set a scheduled task to run daily, but it fails with a network connection lost error partway ...

You restart your PC to finish installing updates, but Windows Update gets stuck on a spinning cir...

You open Windows Security and see the message 'Windows Defender service unavailable' or 'Windows ...

You open Outlook and see an error about a version mismatch, or Outlook won't start because of a r...

If Windows Security (formerly Windows Defender) keeps closing unexpectedly, you may see error mes...