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Windows Defender 502 Bad Gateway: Setup and Troubleshooting Guide - Fix Windows Update Stuck on Blank Screen-SSH Permission Denied publickey Troubleshooting Checklist

Updated 2026-06-13 14:33:03browser-issues
Windows Defender 502 Bad Gateway: Setup and Troubleshooting Guide - Fix Windows Update Stuck on Blank Screen-SSH Permission Denied publickey Troubleshooting Checklist
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.