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How to Fix Windows Security Authentication Failed Error - Resolve RDP Error 0x4: Credentials Did Not Work-Windows Defender Not Updating: Version Mismatch Fix

Updated 2026-06-13 16:05:35developer-tools
How to Fix Windows Security Authentication Failed Error - Resolve RDP Error 0x4: Credentials Did Not Work-Windows Defender Not Updating: Version Mismatch Fix
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.