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

Fix Windows Activation Invalid Configuration Registry Error

You try to activate Windows, but instead get an error message saying the activation configuration...

Fix PowerShell Connection Refused Due to Firewall Rules

When you try to connect to a remote system using PowerShell Remoting (WinRM) and get a "connectio...

Fix Windows 10 Error 0xc004c003: Invalid Product Key

You see error 0xc004c003 during Windows 10 activation, with a message that the product key is not...

Fix kubectl Connection Refused Due to Certificate Issues

When you run a kubectl command and get a connection refused error, the problem is often network-r...

GitHub Actions Runner Not Connecting: Fixes That Work

You've set up a self-hosted GitHub Actions runner, but it never appears online or shows a "runner...

How to Fix systemd Service Restarting Repeatedly Error