Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see error 0x8004de4a when trying to sign in or sync files in OneDrive. This usually means a n...

If you see a timeout error when trying to activate Windows, the problem might not be your license...

Windows activation errors usually appear after a hardware change, a fresh install, or a failed up...

If you encounter Windows Update error 0x8024402c, it usually means the Windows Update client is h...

If you see a message that Windows Defender is not running or the security center shows it's off, ...

You try to start Windows Defender or change its settings and get an error like 'Service permissio...