Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a Windows 10 update, you might see an activation error like "We can't activate Windows on t...

If you've backed up your Windows app data or package files and need to restore Microsoft Store ap...

If you see a 504 Gateway Timeout error in Windows Terminal while accessing a ser...

If Microsoft Teams won’t launch on your Mac—clicking the icon does nothing, or it bounces in the ...

If Chrome crashes on startup, fails to save bookmarks, or displays blank pages, a corrupted user ...

When you see a proxy error while running commands in Command Prompt and your sync operations fail...