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

Cloudflare SSL Full Strict Configuration Checklist

If you see 'This website is not available' or a redirect loop after enabling Cloudflare S...

How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Fix Windows Update Error 0x80070002 Using DISM

If you see Windows Update error 0x80070002, it usually means the update system can't find a n...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Git SSL Certificate Problem on Windows: Unable to Get Local Issuer

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...