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

Clear Windows Activation Cache After Hardware Change

After swapping a motherboard, CPU, or hard drive, Windows may show an activation error or waterma...

Fix OpenVPN Authentication Error: Step-by-Step Guide

If you're seeing "authentication error" when trying to connect to an OpenVPN server, the connecti...

Fix PowerShell Port Already Allocated After Reboot

After a reboot, you might see an error like "port already allocated" when trying to use a specifi...

Fix npm install ENOTFOUND on Windows 10: Package.json Issues