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Fix Windows Defender Proxy Error Not Working - How to Solve Windows Terminal Blank Screen Issue-Troubleshoot PowerShell Localhost Firewall Block

Updated 2026-06-14 06:46:40browser-issues
Fix Windows Defender Proxy Error Not Working - How to Solve Windows Terminal Blank Screen Issue-Troubleshoot PowerShell Localhost Firewall Block
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.