An Update for Windows Server Update Services 3.0 Service Pack 2 is available.
The update replaces/includes the hotfix we are used to installing to be able to publish updates using System Center Updates Publisher when you have .NET framework 4.0 installed.
The update includes an update for the Windows Update Client agent that will be installed automatically from the WSUS server.

From the Technet Article:

The following Microsoft Knowledge Base articles describe the issues that are included in this update:

  • 2530678 (http://support.microsoft.com/kb/2530678/ ) System Center Update Publisher does not publish customized updates to a computer if WSUS 3.0 SP2 and the .NET Framework 4.0 are installed
  • 2530709 (http://support.microsoft.com/kb/2530709/ ) “Metadata only” updates cannot be expired or revised in WSUS 3.0 SP2

This update strengthens the WSUS communication channels. This includes trusting only files that are issued by the Microsoft Update certification authority.

Known issues

  • Consider the following scenario:
    • You connect to Windows Update through a network proxy that uses HTTPS or SSL content inspection.
    • An intermediate server is in between the SSL traffic of the client and Windows Update.

    In this scenario, you have to create exception rules in your HTTPS inspection server so that the Windows Update traffic is tunneled without inspection. For more information about how to create HTTPS inspection exceptions for Microsoft Forefront Threat Management Gateway (TMG), go to the following Microsoft website:

    Excluding sources and destinations from HTTPS inspection (http://technet.microsoft.com/en-us/library/dd441085.aspx)

    For a list of URLs and domains to exclude, click the following article number to view the article in the Microsoft Knowledge Base:

    885819 (http://support.microsoft.com/kb/885819/ ) You experience problems when you access the Windows Update Version 6 website through a server that is running ISA Server
  • If you install the executable file (.exe) manually, you will have to restart the computer to apply the update.
  • Remote Microsoft SQL Server administrators must download and install the update by using an account that has SQL Server Administrator permissions. Remote SQL Server installation will always require manual installation.
  • To apply this update, you must be running Windows Internal Database or SQL Server.
  • The IIS and WSUS services must be stopped to prevent the database from being accessed while the Network Load Balancing (NLB) clusters are upgraded. For more information about how to upgrade NLB, see the “To upgrade NLB on all computers” section.

The whole article can be found here: http://support.microsoft.com/kb/2720211