Knowledge base for software setup, errors, and daily tool work.

How to Fix 'File Locked by Another Program' in Windows Security

You try to delete, rename, or move a file and get the error “The action can’t be completed becaus...

Fix Windows Defender Blank Screen in Windows 10

If you open Windows Defender Security Center in Windows 10 and see nothing but a blank white or g...

Fix 'Windows Defender Not Recognized' Error in Command Prompt

Fix Microsoft Teams Version Mismatch Permissions Issue

When you see a version mismatch error in Microsoft Teams, it usually means someone in your organi...

How to Reinstall a Chrome Extension Without Losing Data

When a Chrome extension stops working, you might need to reinstall it. But you don't want to lose...

Fix Windows Security Token Expired Error 0x80070520

You see error 0x80070520 with the message 'The security token has expired.' This usually happens ...