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

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

Fix Cloudflare Origin Certificate Error After SSL Change

You changed your SSL/TLS setting in Cloudflare (for example, from Flexible to Full or Full Strict...

How to Fix Git Refusing to Merge Unrelated Histories

When you try to merge two Git branches that have no common commit history, Git stops you with the...

Fix Nginx Upstream Connection Refused Socket Error