Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you notice that Windows Search isn't finding files stored in OneDrive, or search results are m...

When running Windows Update, you might see an error message like "404 Not Found" or code 0x802440...

When Microsoft Teams shows a 504 error, it usually means the server gateway timed out while tryin...

If you're seeing a 'rate limit exceeded' error in Windows Defender (now Microsoft Defender for En...

When Outlook repeatedly prompts for credentials or shows authentication failed error 0x80...

Fix Windows Activation slui.exe Not Opening
When you try to activate Windows using the Settings app or a command, slui.exe (Software Licensin...