Checklists for software errors, setup, and tool workflows.

Fix Python Permission Denied When Installing Package in Virtual Environment

You activate your Python virtual environment, run pip install somepackage, and get a...

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

You’re trying to clone or push to a remote repository over HTTPS and Git throws an error like

Fix ERR_NAME_NOT_RESOLVED DNS Configuration Error

When you see ERR_NAME_NOT_RESOLVED in your browser, it means the DNS lookup for ...

Fix Windows Update Error 0x800f081f Installation Failed

When you see Windows Update error 0x800f081f with “installation failed,” it usua...

How to Recover from a Detached HEAD in Git After a Rebase

You're in the middle of a rebase, you see a message like 'detached HEAD', and you'...

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

Symptom

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