Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see a 502 Bad Gateway error in OneDrive, it often means a proxy or network device is inter...

You open the Start menu or File Explorer to search for a file, and nothing happens — or you see a...

You run Disk Cleanup, select Windows Update Cleanup, and nothing happens—or it fails with an erro...

After moving your email from an IMAP account to an Exchange server, Outlook may refuse to sync pr...

If you see 'Windows Search token expired' in Outlook 2016, it usually means the search index is c...

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