Due to the urgency of the MS11-100 release on December 29, 2011, the WSUSSCN2.CAB offline catalog file was not available at the time of the MS11-100 release.

A revised WSUSSCN2.CAB offline catalog file including MS11-100 has been released and is available to support SMS 2003 ITMU, MBSA (in offline mode) and 3^rd party tools that rely on this offline data source.

WSUS (3.x), SCCM, SBS, SCE and MBSA (in online and WSUS modes) were not affected as they use a direct (online) link to Microsoft.com or a local WSUS server as their data source.

A new product family has been added to your WSUS server –
Microsoft Online Services. The Microsoft Online Services product family
will include updates for the Microsoft Online Services Sign-In Assistant
product categories. A new product category entitled Microsoft Online
Services Sign-In Assistant will allow a variety of regular update types,
such as update rollups, critical updates and security updates, and a product
category entitled Microsoft Online Services Sign-In Assistant (Smart Setup
for First-Time Installations) will contain updates to be used on demand
only when Microsoft Office 365 services are deployed. You will see the new
product family categories as new updates are available for this product.
Microsoft Online Services updates will also be available in the Microsoft
Update Catalog at http://catalog.update.microsoft.com.

Microsoft Online Services Sign-In Assistant allows users
single sign-on and federated identity access to Microsoft Office 365 services.
You should synchronize the Microsoft Online Services family if your
organization has deployed or plans to deploy Microsoft Office 365 services to
ensure this product is kept up to date. For additional information about
Microsoft Office 365, see http://www.microsoft.com/en-us/office365/online-software.aspx#fbid=68hffKHVv7r.