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

Fix GitHub Actions Cache Action Permission Denied Error

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus

When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a secure tunnel...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Fix Windows Security Real-Time Protection Not Working

If you see a yellow warning in Windows Security that says "Real-time protection is off" or it tur...

BitLocker Troubleshooting for External Hard Drive

If you use BitLocker to encrypt an external hard drive, you may run into problems like being aske...

Fix Windows Activation Stuck on Loading Registry

You try to activate Windows, and the activation window hangs on "Loading registry" indefinitely. ...