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OneDrive Setup Sync Folder Not Syncing: Practical Fixes - Resolve Outlook 502 Bad Gateway from Antivirus-Windows Security 504 Error After Update Fix

Updated 2026-06-15 00:18:46browser-issues
OneDrive Setup Sync Folder Not Syncing: Practical Fixes - Resolve Outlook 502 Bad Gateway from Antivirus-Windows Security 504 Error After Update Fix
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.