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How to Fix OneDrive Sync 504 Gateway Timeout Error - Fix RDP Authentication Error: Step-by-Step-Fix OneDrive SSL Certificate Error After Update

Updated 2026-06-13 22:41:37developer-tools
How to Fix OneDrive Sync 504 Gateway Timeout Error - Fix RDP Authentication Error: Step-by-Step-Fix OneDrive SSL Certificate Error After Update
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.