Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you type a URL or search term into the Windows Search bar and see an SSL certificate error, ...

When you try to update or run Windows Defender, you might see error 0x80070643 with a message lik...

You see ERR_INVALID_ARG_TYPE after a Node.js update or when switching projects. This...

If you see a Windows Update error mentioning an expired token, the update components may have sta...

You might see the error "Windows activation module not found" when trying to activate Windows, or...

You open the Microsoft Store, try to sign in, and it keeps asking you to sign in again — or the l...