Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When a service or application fails to start with a message like "port already in use" or "addres...

You type a file name into the Windows search box and nothing appears—or only old results show up....

If files aren't syncing, icons are stuck, or you see error messages, this checklist walks you thr...

When you run slmgr /ipk or a similar command to activate Windows, you might see an e...

When you see a Windows activation error that mentions a proxy, it usually means the activation cl...

You’re trying to start Windows Search or an indexing service, and you see an error like “Port 80 ...