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

Fix 'Permission Denied' in Ubuntu Terminal

You type a command in the Ubuntu terminal and get Permission denied. This usually me...

Fix Windows Security Settings Not Loading or Resetting

Windows Security (formerly Windows Defender Security Center) may fail to load or reset properly d...

UFW Allow Port Not Working After Reboot: Fixes That Actually Work

You added a UFW rule to allow a port, it works fine until you reboot, then the port is blocked ag...

Fix NVM Not Found in Git Bash on Windows

Fix 'ModuleNotFoundError: No module named' in Windows Terminal

If you're seeing ModuleNotFoundError: No module named 'something' in Windows Termina...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Error

When you see "ERR_TUNNEL_CONNECTION_FAILED" in Chrome, it usually means your browser can't establ...