Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You sign in to Windows, but instead of your desktop you get an activation prompt, and after enter...

If Windows Search gets stuck on "loading results" or shows a spinning cursor indefinitely, it's u...

If Outlook starts misbehaving after a crash, update, or add-in install, you might see errors, mis...

If you see OneDrive sync error 0x80070194, it usually means Windows can't access a file because o...

If you're seeing a '404 Not Found' error in Command Prompt, it usually means the file, command, o...

You see error 404 when checking for updates in Windows Update. This usually means the update serv...