Why does MBSA not display all the software updates that are available for a product?
The default output of the mbsacli -hf command displays only critical, numbered Microsoft Security Response Center (MSRC) software updates for the operating system and service pack. The default output takes into account earlier software updates that are superseded by later software updates. Use the -history 2 switch to display all the missing software updates. The list of software updates includes those that are superseded by later software updates. For example, the software update for MS01-044 supersedes many earlier IIS software updates. Therefore, if the computer has the most recent service pack installed, you need only install MS01-044 and the other IIS hotfixes that are listed in the default output for the computer to be up to date.