Workflow manuals for setup steps, repeatable tasks, and software operations.

How to Fix Git 'index.lock' File Exists Error

When you see fatal: Unable to create 'path/.git/index.lock': File exists., G...

Docker Container Exits Immediately with Exit Code 137

You start a Docker container, and it exits almost immediately with exit code 137. This usually me...

Fix Wi-Fi No Internet on Windows 11 Without Restarting Router

You connect to Wi-Fi, the icon shows internet access, but browsers say no internet. Restarting th...

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

Symptom

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

How to Fix Firefox Secure Connection Failed Error Code

You're browsing and suddenly Firefox shows a full-page error: Secure Connection Faile...