Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Permanently Allow Unrelated Histories in Git Merge

If you've ever tried to merge two Git branches that don't share a common ancestor, you...

Fix Nginx Config Test 'Permission Denied' Error

Running nginx -t and seeing 'permission denied' can stop you from reloading ...

Fix ERR_CERT_AUTHORITY_INVALID on Localhost

When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...

How to Stop Chrome from Crashing at Launch

If Chrome crashes immediately when you try to open it, you're not alone. This usually happens...

How to Fix the Git index.lock File Exists Error

You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

Fix Windows Defender Real-Time Protection Not Starting
If you see a yellow warning or a message that real-time protection is off, Windows Defender’s cor...