Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you try to open Command Prompt and see a message like “Command Prompt has been disabled by you...

If Windows Defender fails to start or shows error messages like "Service configuration is corrupt...

You open OneDrive and see 'Setting up sync' or 'Starting' for a long time—sometimes hours. This u...

If you see error 0x80070422 when trying to open Windows Defender Security Center, the service is ...

When Windows reports 'Activation authentication failed,' it usually means the system couldn't ver...

When you open Task Scheduler and see 'Service unavailable' or 'Permission denied', the Task Sched...