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

Fix Nginx 'Permission Denied' Upstream Errors

When Nginx logs permission denied while connecting to an upstream (e.g., a Unix sock...

Restore Windows Defender Real-Time Protection After Malware Disables It

If your Windows Defender real-time protection has been turned off and you suspect malware is the ...

Cloudflare DNS Propagation: How to Check and Fix Delays

When you change DNS records on Cloudflare, propagation can take longer than expected. This articl...

Fix Cloudflare DNS Propagation Not Happening for www

You updated DNS records for your www subdomain in Cloudflare, but hours (or days) later, the chan...

Fix Nginx 502 Bad Gateway on Docker Ubuntu

Python Requests Timeout Not Waiting: Fixes and Checks

You set a timeout in Python's requests library, but the call either hangs foreve...