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

Recover Lost Changes After Git Detached HEAD

You've made several edits, then checked out an old commit or tag, and now Git says you're...

Fix Windows Update Error 0x80070002 with System File Checker

When Windows Update fails with error 0x80070002, it often points to missing or corrupted system f...

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

Symptom

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

Fix VS Code Permission Denied Error on Windows 11

If you see "permission denied" when saving files, running terminals, or using extensions ...

Fix Nginx 502 Bad Gateway in Docker Containers

An Nginx 502 Bad Gateway error when proxying to a Docker container usually means Nginx cannot rea...