Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you get error 0x80070020 when opening or editing a file over Remote Desktop, it usually means ...

If you've reset Outlook settings and now see error 0x8004010f, it usually means Outlook cannot fi...

You open File Explorer, type a filename or keyword into the search box, and nothing happens — or ...

You might need to stop Windows Search if it's holding port 10243 or another port you need for dev...

You try to use Windows Search, but it keeps asking you to sign in again and again—even after you ...

If you see error 0x80070643 during a Windows activation update, the update process has been inter...