zhizhu
Home / browser-issues / Windows Restore Point Missing After Update – How to Fix - Fix Windows Security Proxy 504 Gateway Timeout Configuration-Troubleshoot Windows Defender DNS Resolution Failure

Windows Restore Point Missing After Update – How to Fix - Fix Windows Security Proxy 504 Gateway Timeout Configuration-Troubleshoot Windows Defender DNS Resolution Failure

Updated 2026-06-13 14:26:02browser-issues
Windows Restore Point Missing After Update – How to Fix - Fix Windows Security Proxy 504 Gateway Timeout Configuration-Troubleshoot Windows Defender DNS Resolution Failure
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.