Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you try to activate Windows and see “proxy server not responding,” it usually means Windows ...

If you're seeing a 502 Bad Gateway error when a Task Scheduler job runs, it usua...

You're trying to install or update Visual Studio, but the installer fails with error code 0x80070...

You try to activate Windows, but the activation fails with an error like '0xC004F074' or 'The act...

If you need to route traffic through a proxy server on Windows, you can set proxy settings direct...

When the Microsoft Store won't open, shows error codes, or fails to download apps, it's usually d...