If you want to manually download the cabinet file for Microsoft Baseline Security Analyzer (MBSA) v2.2, here's the url:
http://go.microsoft.com/fwlink/?LinkId=76054
The name of the file is WSUSSCN2.CAB
http://go.microsoft.com/fwlink/?LinkId=76054
The name of the file is WSUSSCN2.CAB