Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Windows Security (formerly Windows Defender) doesn't start automatically after you log in, you...

When VirtualBox fails to start a virtual machine with an error like “Kernel driver not installed”...

If Windows Search can’t connect to the internet, you’ll likely see errors like “Can’t connect to ...

If you need to run Windows Defender scans or update definitions from the command line, you'll use...

If you can't sign in to OneDrive, the problem is often something simple — wrong password, cached ...

When you click an email in Outlook on the web and get a blank screen, it's usually a browser or c...