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Fix OneDrive 502 Bad Gateway Error from Proxy Settings - Fix Windows Search Settings Not Saving Changes-Windows Defender Not Working – 504 Error Fix

Updated 2026-06-13 22:48:36office-tools
Fix OneDrive 502 Bad Gateway Error from Proxy Settings - Fix Windows Search Settings Not Saving Changes-Windows Defender Not Working – 504 Error 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.