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

DNS Probe Finished NXDOMAIN: Meaning and Fixes

You're trying to visit a website but Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". This...

Fix Nginx 'Permission Denied' Upstream Errors

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

Manually Download and Fix Windows Update Error 0x80070002

You see error 0x80070002 when checking for updates. It usually means Windows Update can't fin...

Chrome Startup Crash Due to Malware: Detection and Fix

If Chrome crashes immediately upon launch, or opens to a blank page before closing, malware may b...

Docker Compose Environment Variable Not Updating? Fix It

Fix 'Permission Denied' in VS Code Terminal for Python

You're in VS Code, you open the terminal, type python script.py, and get p...