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

How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

If you need all subdomains (e.g., *.example.com) to point to the same IP or service, a wildcard D...

Fix npm run build Failed After Git Pull

You pulled the latest code from Git, ran npm run build, and got errors. This is a co...

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

This error usually means Windows Update doesn't have pe...

Fix Windows Update Error 0x800f081f After Update

If you see error 0x800f081f after a Windows update, the installation likely failed because requir...

Fixing Git Authentication Failed in VS Code

If you see "git authentication failed" when pulling, pushing, or cloning in VS Code, the ...

Fixing Nginx 502 Bad Gateway with Docker and Load Balancers

If you're running Nginx as a reverse proxy or load balancer in a Docker setup, a 502 Bad Gate...