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Fix PowerShell Blank Screen with No Cursor - Windows Defender 502 Bad Gateway: Setup and Troubleshooting Guide-504 Gateway Timeout on Windows Update: Solutions

Updated 2026-06-14 20:24:05browser-issues
Fix PowerShell Blank Screen with No Cursor - Windows Defender 502 Bad Gateway: Setup and Troubleshooting Guide-504 Gateway Timeout on Windows Update: Solutions
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.