Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a recent Windows update, you might see a network error when using Windows Search—for exampl...

When you try to download a file in Chrome on Windows, you may see error code 0x80070005. This usu...

You try to run Windows Update, but it fails with an error about a port already being allocated. T...

If you're setting up a new Windows machine or hardening an existing one, this checklist covers th...

You open a folder, type a filename into the search box, and Windows returns nothing—even though y...

If you see 'Windows Defender service not starting – permission denied' when trying to enable Micr...