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Fix Microsoft Teams 504 Gateway Timeout Sync Issues - Fix Microsoft Teams Token Expired Authentication Failed Error-Step-by-Step PST Repair for Outlook Not Opening

Updated 2026-06-14 22:12:26developer-tools
Fix Microsoft Teams 504 Gateway Timeout Sync Issues - Fix Microsoft Teams Token Expired Authentication Failed Error-Step-by-Step PST Repair for Outlook Not Opening
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.