Checklists for software errors, setup, and tool workflows.

Git index.lock File Exists Even After Deleting: Fixes

You delete the .git/index.lock file, but Git still says it exists. This can happen d...

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 Git Authentication Failed in VS Code on Mac

If you see "Git authentication failed" when pushing or pulling in VS Code on a Mac, the p...

Fix 'Python' Command Not Found After Reinstall on Windows

You reinstalled Python on Windows, but when you type python in Command Prompt, you g...

Fix Node.js Heap Out of Memory in Docker Containers

If your Node.js application running in a Docker container crashes with a "JavaScript heap out...

Fix NET::ERR_CERT_AUTHORITY_INVALID via Chrome Enterprise Policy

If you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome on a managed device, the is...