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Windows Defender 504 Timeout: Quick Troubleshooting Checklist - How to Fix pgAdmin Server Connection Refused-How to Unlock a File Locked by Windows Defender

2026-06-13 14:54:33
Windows Defender 504 Timeout: Quick Troubleshooting Checklist - How to Fix pgAdmin Server Connection Refused-How to Unlock a File Locked by Windows Defender

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.