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

Fix Windows Defender Not Starting After Update

After a Windows update, you might see that Windows Defender (now called Microsoft Defender Antivi...

Fix Windows Activation Service Unavailable on Windows 10 Pro

If you see the error 'Windows Activation Service Unavailable' on Windows 10 Pro, it usually means...

How to Fix Chrome 502 Bad Gateway Error on Mac

If you see a 502 Bad Gateway error in Chrome on your Mac, it usually means that a server upstream...

Fix GitHub Actions Cache Action Permission Denied Error

Fix Windows Terminal SSH Connection Refused Error

When you try to SSH from Windows Terminal and get Connection refused, it means the r...

Fix Windows Activation DNS Not Resolving Server Name

When Windows fails to activate, the error often points to DNS problems — specifically, the server...