Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You’ve just restarted your PC after installing updates, but Windows Update won’t start. The updat...

When launching Chrome on Windows 10, you might see an error like “Your profile could not be opene...

When Windows Update hangs on "Checking for updates" or "Configuring updates," it can leave you st...

If Windows Security (formerly Windows Defender) won't open or gets stuck on a loading screen, the...

If you see an error like fatal: unable to access 'https://...': SSL certificate problem: un...

Chrome Extension Not Appearing in Toolbar: Fixes
You installed a Chrome extension, but its icon isn't showing up in the toolbar. This is frustrati...