Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After updating Jupyter or its dependencies, you might see the kernel die immediately or hang with...

You downloaded the Windows Security offline installer but it won't run, hangs, or throws an error...

You've installed Ubuntu and opened the terminal, but the default command prompt might feel plain ...

You try to send an email in Outlook and get an error that your sending limit has been reached. Th...

When Firefox shows a “Secure Connection Failed” error, it means the browser couldn’t verify the w...

You install a Chrome extension, but it doesn't appear in the toolbar, or it's grayed out, or it j...