
Fix Windows Defender Authentication Error from Corrupted System Files
You open Windows Defender and see an authentication failed error. This often happens after a fail...
Software troubleshooting desk

You open Windows Defender and see an authentication failed error. This often happens after a fail...

After a Windows update, you might see "The term 'powershell' is not recognized as the name of a c...

You open Windows Security and see a message about a version mismatch, or the Security Center serv...

You try to open a file with 7-Zip and get the error: “Cannot open the file as archive”. ...

When you see 'invalid configuration' in Command Prompt, it usually means something in the environ...

If the Microsoft Store won't load, apps fail to download, or updates get stuck, a corrupted cache...