
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've recently replaced your motherboard, CPU, or other major hardware, you may see a Windows...

If OneDrive is using 20% or more of your CPU on Windows 11, it's usually due to a stuck sync, cor...

You're trying to open Microsoft Store and get a 502 Bad Gateway error. This usua...

You try to install or update an app from the Microsoft Store, but you get error 0x80073cf9. The a...

If you're running Windows 10 and get an error when trying to update PowerShell—either via U...