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

Fix Windows Search Blank Screen When Clicking Start Menu

If clicking the Start menu shows a blank search screen instead of the usual results and apps list...

Fix Redis Not Starting with systemctl on CentOS

If you run systemctl start redis on CentOS and the service fails silently, you're no...

How to Fix Windows Store Error 0x80073cf9

If you see error 0x80073cf9 when trying to install or update an app from the Windows Store, it us...

Windows Activation Path Not Found: Troubleshooting Checklist

When you see the error "Windows activation path not found", Windows can't locate...

Fix GitHub Actions Cache Action Permission Denied Error

Fix Windows Defender Token Expired in Safe Mode

If you see a 'token expired' message when trying to run Windows Defender in Safe Mode, it usually...