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

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 Windows Activation Login Loop

You sign in to Windows, but instead of your desktop, you see the activation screen again—over and...

Checklist for Fixing Windows Activation Token Expired

If you see a message saying your Windows activation token has expired, it usually means the syste...

How to Fix DNS Errors by Setting Up Windows Defender

If you're seeing DNS errors while browsing—like "DNS server not responding" or "DNS probe finishe...

Fix Maven Dependency Resolution Failed in Offline Mode