Microsoft delivers first cumulative update to Exchange 2013

Microsoft delivers first cumulative update to Exchange 2013

Summary: The first cumulative update for Microsoft's Exchange Server 2013, which includes both bug fixes and new features, is available for download.


On April 2, Microsoft announced availability of Exchange 2013 Cumulative Update 1 (CU1), which provides both bug fixes and new feature updates to Microsoft's latest on-premises Exchange release.


Unlike previous versions, cumulative updates do not use the rollup infrastructure. Instead, under the new Exchange servicing model, "cumulative updates are actually full builds of the product, meaning that when you want to deploy a new server, you simply use the latest cumulative update build available and do not necessarily need to apply additional Exchange Server updates," the team explained in a new blog post with instructions for installing CU1.

The final build number for CU1 is 15.0.620.29. "CU1 is the minimum version of Exchange 2013 required for on-premises coexistence with supported legacy Exchange Server versions," according to the team.

Among the new features in CU1 are:

  • Addition of an address-book-policy routing agent
  • The ability of groups to manage groups
  • Access to public-folder favorites through Outlook Web App 
  • Enhancements to the Exchange Admin Center, including unified-messaging management

According to a blog post by the team, Exchange 2013 RTM CU1 will support the Exchange Server 2013 Management Pack for System Center Operations Manager (SCOM) -- a management pack that will be available at an unspecified later date. This management pack is supported on SCOM 2007 R2 and SCOM 2012.

Microsoft officials have committed to providing quarterly cumulative updates for Exchange Server, starting with the Exchange 2013 release.

Here's the download link for Exchange 2013 CU1.

Topics: Enterprise Software, Collaboration, Microsoft


Mary Jo has covered the tech industry for 30 years for a variety of publications and Web sites, and is a frequent guest on radio, TV and podcasts, speaking about all things Microsoft-related. She is the author of Microsoft 2.0: How Microsoft plans to stay relevant in the post-Gates era (John Wiley & Sons, 2008).

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  • Exchange, the weekend killer

    of all weekend killers. Thankfully, if recent trends continue, more IT people can start having their weekends back.
    • HA

      Being the magic word :)

      I can not remember the last time ai had to sacrifice a weekend because of Exchange. With high availablility you can simply service one machine whilst the other services clients.

      We are ready to roll out Exchange 2013 and it seems co-existance is now available, so just the right timing for us.
    • Still on 2007, non HA

      and it purrs and purrs along. (knock on wood) Our SAN based disk is the only HA we have for 6000 users.
      • Yeah...
  • And Still No Guidance

    We're at CU1 and still no guidance on upgrading from Exchange 2010.
    • Guidance Today

      jmastry - the Exchange team blog says documentation will be available today.
      Blake Dynamo
      • Guidance

        And..... it's there. Thanks for pointing that out Blake.