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

How to Fix Remote Desktop Connection Refused on Ubuntu

You try to connect to your Ubuntu machine via Remote Desktop (RDP) and get a "connection refused"...

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...

Fix Windows Security Invalid Configuration Permission Denied

You open Windows Security and see 'Invalid configuration. Permission denied.' This usually means ...

Reduce Microsoft Teams High CPU Usage: Practical Fixes

If Microsoft Teams is making your laptop fan spin loudly or slowing down other apps, high CPU usa...

Fix MongoDB Authentication Failed Permission Denied Error