Checklists for software errors, setup, and tool workflows.

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Fix Chrome Certificate Error: Invalid Authority & Date/Time Issue

You're browsing in Chrome and see a full-page warning: Your connection is not private...

Fix Git Push Rejected Non-Fast-Forward After Pull
You run git pull, then git push, and get: ! [rejected] non-fast-f...

Fix npm install Incompatible Node Version Errors When you run npm install and get an error about an incompatible Node.js version, it ...

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...

How to Enable Chrome Extensions That Aren't Loading You open Chrome and see a grayed-out extension icon. Clicking 'Enable' does nothing, or t...

How to Fix Git Detached HEAD State and Undo Changes You run git status and see something like "HEAD detached at abc123". This ha...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Chrome Certificate Error: Invalid Authority & Date/Time Issue

Fix Git Push Rejected Non-Fast-Forward After Pull

Fix npm install Incompatible Node Version Errors

Git index.lock File Exists Even After Deleting: Fixes

How to Enable Chrome Extensions That Aren't Loading

How to Fix Git Detached HEAD State and Undo Changes

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