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

Fixing Cloudflare Wildcard Subdomain Proxy Errors

If you've set up a wildcard DNS record (e.g., *.example.com) in Cloudflare and a...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

Fix Windows Security App Configuration Error

When you open Windows Security and see a message like "Your IT administrator has limited acce...

How to Fix Nginx 502 Bad Gateway in Docker

If you're running Nginx as a reverse proxy inside Docker and seeing a 502 Bad Gateway error, ...

Windows 11 Update Stuck at 0% in Safe Mode: How to Fix

You boot into Safe Mode to troubleshoot a problem, but Windows Update shows 0% and won't budg...