
Windows Update Login Loop Troubleshooting Checklist
If you're stuck in a Windows update login loop — where you sign in, the screen goes black or logs...
Software troubleshooting desk

If you're stuck in a Windows update login loop — where you sign in, the screen goes black or logs...

You open Microsoft Store and see an SSL certificate error—maybe “ERR_CERT_AUTHORITY_INVALID” or a...

You might see a Windows Security alert about a DNS error after installing or updating a third-par...

You need to forward incoming connections on one port to a different internal port or host, but yo...

After a Windows Update, Windows Defender (now called Microsoft Defender Antivirus) may stop worki...

When you try to clear the Windows security cache—often to fix authentication issues or credential...