Checklists for software errors, setup, and tool workflows.

How to Use a Cloudflare DNS Propagation Checker Tool

After you change a DNS record in Cloudflare, it takes time for the update to spread across the in...

How to Stop Nginx Redirect Loop: Practical Fixes

An Nginx redirect loop (too many redirects) usually appears as a browser error after multiple 301...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

You run git clone https://example.com/repo.git and get:

fatal: unable to acc...

Windows 11 Installation Assistant Stuck at 99% Due to Antivirus

You're running the Windows 11 Installation Assistant, it gets to 99%, and then just sits ther...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Windows 11 Update Stuck at 0%? Here's How to Fix It

You click "Check for updates" and see the download sitting at 0% for minutes or hours. Th...