Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Windows Search is using too much CPU or disk I/O, or you're troubleshooting search issues,...

If you see an error like fatal: Unable to create 'path/to/repo/.git/index.lock': Fi...

Fix Windows 11 Wi-Fi No Internet by Disabling IPv6
If your Windows 11 PC connects to Wi-Fi but shows 'No internet' while other devices work ...

How to Fix a Detached HEAD with Git Reset --hard
You're working in Git, and suddenly you see a warning: You are in 'detached HEAD...

Fix 'Python Is Not Recognized as an Internal or External Command'
When you type python in the Command Prompt and see 'python is not recognized...

Fix Microsoft Edge Sync Error 0x80070424
You try to sync your Microsoft Edge data—bookmarks, passwords, settings—but get error 0x80070424....