
Windows Defender Authentication Failed: Step-by-Step Checklist
You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...
Software troubleshooting desk

You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...

If you see an error like “PowerShell Invalid Configuration in Registry” when launching PowerShell...

When you run Windows Update commands like wuauclt /detectnow or PowerShell cmdlets s...

After installing a Windows update, you may find that PowerShell no longer appears in the Start me...

If Windows Defender shows a rate limit error, it usually means the antivirus service is overwhelm...

You enter your credentials in Chrome, the page refreshes, and you're back at the login screen. Th...