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

Fix Windows 11 Wi-Fi No Internet by Disabling IPv6

If your Windows 11 PC connects to Wi-Fi but shows 'No internet' while other devices work ...

Fix 'port already allocated' for Nginx in Docker Compose

You're starting your Docker Compose setup with Nginx, and you see "port is already alloca...

Fix NET::ERR_CERT_AUTHORITY_INVALID on Windows 10

You're browsing in Chrome or Edge and see NET::ERR_CERT_AUTHORITY_INVALID. T...

Fix Nginx Upstream Connection Refused & Upstream Not Found

When you see upstream connection refused or upstream not found in your ...

Node.js Heap Out of Memory vs Stack Overflow: Key Differences