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

Fix Windows Security DNS Error Blocking Internet Access

If your internet stops working and you see a Windows Security DNS error, it usually means the DNS...

Fix Windows Defender Invalid Configuration via Group Policy

When Windows Defender reports an "invalid configuration" error, it's often due to conflicting or ...

Quick Fix for Microsoft Teams Error Code CXA20001

If you see error code CXA20001 when signing into Microsoft Teams, the app is usu...

How to Fix 'Teams Permission Denied for File Upload'

You try to upload a file to a Teams channel or chat, but see a 'permission denied' error. This us...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Fix Microsoft Teams High CPU Usage on Mac M1

If you're using Microsoft Teams on an Apple M1 Mac and noticing the fan spinning up or the machin...