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How to Fix Firefox Secure Connection Failed Error - Common Postman Timeout Causes-Windows Defender 0x80070422: Causes and Fixes

Updated 2026-06-13 13:00:59developer-tools
How to Fix Firefox Secure Connection Failed Error - Common Postman Timeout Causes-Windows Defender 0x80070422: Causes and Fixes
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.