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

Windows Defender Real-Time Protection Won't Turn On: Fixes

You open Windows Security, toggle real-time protection on, but it slides back to off. This is a c...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

SSH Public Key Permission Denied vs Password Authentication: Fixes

You can SSH into a server using a password, but when you try the same connection with a public ke...

Fixing 'docker compose build --no-cache' Not Working

You run docker compose build --no-cache expecting a fresh rebuild, but the container...

GitHub Actions Secrets Not Being Passed: How to Fix

You've added a secret to your GitHub repository, but when your workflow runs, the environment var...

Fix VirtualBox Kernel Driver Not Installed on Ubuntu

When you try to start a virtual machine in VirtualBox on Ubuntu and see the error 'Kernel driver ...