Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a Windows update, you might see "Authentication failed" when trying to sign in to the Micro...

If you're coming from Windows, you might be looking for "Command Prompt" on your Mac. The equival...

You might see a “Windows Update token expired” error when checking for updates, often after a lon...

You open Chrome and see a message that your profile token has expired. This usually means Chrome ...

If Windows Search returns results from folders you'd rather keep out of its index—like backups, t...

You try to open Command Prompt and get an error about a version mismatch, or commands don't work ...