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

Windows Update Service Not Running in Windows 11: Fix It

If Windows Update won't start and you see an error like "Windows Update service is not ru...

Cloudflare Error 521: Web Server Down Checklist

Cloudflare error 521 means your origin web server refused the connection. This is not a Cloudflar...

Fix Nginx 502 Bad Gateway Docker Permission Denied

When running Nginx as a reverse proxy in a Docker environment, a 502 Bad Gateway error often poin...

Enable Wildcard Subdomain in Cloudflare: Step-by-Step

If you need all subdomains (like *.example.com) to point to the same server, a wildc...

How to Fix Python Requests Connection Timeout Errors

Fix Windows 11 Installation Assistant Stuck at 99% with Clean Boot

You're upgrading to Windows 11, and the Installation Assistant gets stuck at 99% for a long t...