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

UFW Allow Port Range Not Opening: Fixes and Checks

If you've added a UFW rule to allow a range of ports but connections are still being blocked, the...

Why Your Windows 11 Digital License Won't Transfer to a New PC

You've bought a new PC and expect your Windows 11 digital license to follow you. But when you try...

Fix Visual Studio Installer Stuck on Preparing Files

You start a Visual Studio installation or update, and the installer sits on "Preparing files" for...

Fix PostgreSQL Connection Refused from Docker Container

You have a Docker container that needs to connect to a PostgreSQL database. The container starts,...

Fix Error 0x80070005 Access Denied in Command Prompt