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Fix PostgreSQL Password Authentication Failed on Localhost - Windows 11 Defender Service Not Working: Troubleshooting Guide-Fix PowerShell Login Loop and Sync Errors

Updated 2026-06-13 19:49:28browser-issues
Fix PostgreSQL Password Authentication Failed on Localhost - Windows 11 Defender Service Not Working: Troubleshooting Guide-Fix PowerShell Login Loop and Sync Errors
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.