Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Chrome opens to a blank page, crashes on startup, or shows a message that your profile couldn'...

You log into your Chrome profile, and instead of your homepage or tabs, you get a blank white scr...

If Windows Security won't open—clicking the icon or searching for it does nothing—you're not alon...

After a Windows update, you may notice that apps from the Microsoft Store no longer start automat...

You try to activate Windows, but get a '504 Gateway Timeout' error. This usually means the activa...

You need to install the command prompt tool—perhaps for development or system tasks—but the insta...