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Fix BitLocker Proxy Error Certificate Issues - Fix Windows Defender Access Denied via Group Policy-OneDrive 504 Gateway Timeout Sync Error Fix

Updated 2026-06-15 04:21:36windows-fixes
Fix BitLocker Proxy Error Certificate Issues - Fix Windows Defender Access Denied via Group Policy-OneDrive 504 Gateway Timeout Sync 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.