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

Fix Nginx 502 Bad Gateway on Docker Ubuntu

DNS Probe Finished NXDOMAIN vs Server Not Found: Key Differences

When you see a 'DNS probe finished NXDOMAIN' or 'Server not found' error in your ...

How to Fix Nginx Redirect Loop Infinite Redirect

If you see a browser error like "ERR_TOO_MANY_REDIRECTS" or "redirect loop", Ngin...

Windows 10 Taskbar Icons Not Showing? Here's How to Fix It

You log into Windows 10, and the taskbar is nearly empty—no icons for open apps, pinned programs,...

Cloudflare Wildcard Subdomain CNAME Setup Guide

If you need to route all subdomains (e.g., *.example.com) to the same target, a wildcard CNAME re...

Fix Nginx Redirect Loop Caused by Rewrite Rules

Redirect loops in Nginx often appear as endless redirects between two URLs or as a browser error ...