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Fix Windows Update Authentication Failed via Credential Manager - Blank PowerShell Window When Running Script: Solutions-Fix Windows Defender & Ubuntu Sync Issues on Dual Boot

Updated 2026-06-14 18:40:16developer-tools
Fix Windows Update Authentication Failed via Credential Manager - Blank PowerShell Window When Running Script: Solutions-Fix Windows Defender & Ubuntu Sync Issues on Dual Boot
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.