Checklists for software errors, setup, and tool workflows.

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

You run git clone https://example.com/repo.git and get:

fatal: unable to acc...

Fix 'port already allocated' for Nginx in Docker Compose

You're starting your Docker Compose setup with Nginx, and you see "port is already alloca...

Fix Windows Update Service Not Running with Malwarebytes

If Windows Update fails with error messages like "Service not running" or "Windows Up...

Fix Nginx 502 Bad Gateway on Docker Ubuntu

You're running Nginx as a reverse proxy inside Docker on Ubuntu, and suddenly you see

How to Fix Git Detached HEAD State and Undo Changes

You run git status and see something like "HEAD detached at abc123". This ha...

VS Code Source Control Not Detecting Changes on Mac: Fixes

You make edits in VS Code on your Mac, but the Source Control panel shows nothing. No files appea...