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Fix 'Authentication Failed' Errors in Windows Server CMD - Diagnose and Resolve PowerShell Startup Errors-Troubleshooting Windows Defender 0x8007042c Network Error

Updated 2026-06-15 14:25:04browser-issues
Fix 'Authentication Failed' Errors in Windows Server CMD - Diagnose and Resolve PowerShell Startup Errors-Troubleshooting Windows Defender 0x8007042c Network Error
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.