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How to Apply Lync Server 2013 Cumulative Updates

How to Apply Lync Server 2013 Cumulative Updates

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Update 3/17/13 - Added information about additional update steps from KB2809243.

Just like previous versions of OCS/Lync, there are two methods to update the servers with OCS/Lync cumulative updates.  You can use Microsoft Update/WSUS or you can use LyncServerUpdateInstaller.exe.  Both ways accomplish the same thing, but what I find is that a lot of customers who use the Microsoft Update/WSUS method forget to then go back and apply any database updates that are needed.  This blog post focuses on the LyncServerUpdateInstaller.exe method, as I prefer using it over the Microsoft Update/WSUS method:


Installing Standard Edition Server Cumulative Updates

To apply the latest cumulative updates to a Standard Edition Server, all you need to do is run LyncServerUpdateInstaller.exe and click on Install Updates:

The installer will detect what Lync services have been installed on the server and will display whether or not the latest update has been applied.  Once the updates have been installed, restart the server if prompted to do so and then skip down to the "Installing Lync Database Updates" at the bottom of this article.


Installing Enterprise Edition Pool Front End Server Cumulative Updates

With the release of the Lync Server 2013 Cumulative Updates, the process for updating Front End Servers in an Enterprise Edition Pool has changed slightly.  Most of the changes have to do with the move to using Windows Fabric to replicate data between the Front End Servers in an Enterprise Edition Pool.  With the introduction of Windows Fabric a couple of other concepts were also introduced, User Groups and Upgrade Domains.  Both are created and managed by Windows Fabric automatically.  You can read more about these new features in the Lync Server 2013: Windows Fabric & User Groups blog post.  Because of these new concepts in Lync Server 2013, you will need to update your Front End Servers one at a time, making sure that services are fully restored on that server before you move on to the next Front End Server in the pool in order to make sure that you maintain quorum and at least one copy of all of the user groups.  The flow chart below, from the Upgrade or Update Front End Servers TechNet article, walks through the process:

Running Get-CsPoolUpgradeReadinessState should return something similar to the following output:

If the cmdlet returns True for IsReadyForUpgrade for the server you are going to update, you can then run LyncServerUpdateInstaller.exe and apply the necessary updates on the Front End Server:

This process is the same as updating a Standard Edition Server.  Once the updates have been installed, restart the server if prompted to do so.  Once the server has been restarted, make sure that all of the services have returned to the running state and then run the Get-CsPoolUpgradeReadinessState cmdlet again and repeat the process until all of the Front End Servers in the pool have been updated.  You can then skip to the "Installing Lync Database Updates" at the bottom of this article.


Installing Lync Database Updates

Also like previous version of OCS/Lync there Lync database updates that need to be applied.  The steps are detailed in the "Step 2: Apply the back end database updates" section in KB2809243.  You apply the update by running the following PowerShell cmdlet on one Front End Server in each Enterprise Edition Pool and all Standard Edition Servers in your environment:

Install-CsDatabase -ConfiguredDatabases -SqlServerFqdn FEBE.FQDN -Verbose


Additional Update Steps

Also make sure that you follow the steps in sections "Step 3: Enable the Mobility service" and "Step 4: Enable the Unified Communications Web API" in KB2809243.


Installing Updates on Other Lync Server 2013 Servers

To apply the latest cumulative updates on other Lync Server 2013 servers in your environment, just run LyncServerUpdateInstaller.exe and click on Install Updates.

  • Thanks a lot for the summary, but also states:


    "%ProgramFiles%\Microsoft Lync Server 2013\Deployment\Bootstrapper.exe"

    Is that only optional or does it enable the new UC API for Lync 2013 mobile access?



  • @Thomas

    Thanks for the feedback!  I updated the post to reflect this.

  • Thank you a lot. I got some errors during "Installing Lync Database Updates". I opened a TechNet Forums post:

    Please could you tell me more ?


  • @Luca Fabbri

    This happens because of the design of the update for some specific databases, such as rtcab. The stored procedure sp_addrole is throwing that warning because the role already exists.  The warning messages can be ignored.

  • What about the edge servers?  I rant the updater.exe but are there any extra stuff like on the FE servers?  ie step 2-4 where you run powershell commands and bootstrapper?

  • @Matt H

    For the Edge Servers, currently you only need to run the LyncServerUpdateInstaller.exe.

  • Do you need to run Enable-CsTopology and Bootstrapper on a SBA?  Thanks.

  • @Thomas N

    No, Web Components aren't installed on an SBA/SBS.

  • What if there are multiple sites?

    What if (multiple) sites are equipped with the latest updates. But the CMS Database is NOT. Is this possible? Can a updated site run without applying the latest updates on the CMS (Yet)?



  • @Johan vd S

    Yes, however if the CMS is on a Lync Server 2013 pool, it would be recommended to run any updates for the CMS once the pool hosting the CMS and it's paired pool, if one exists, are updated.

  • After applying CU5 one of my servers report following version for Core Components.
    Microsoft Lync Server 2013, Core Components 5.0.8308.803

    Wonder what caused it to get upgraded to a version newer than 5.0.8308.733 ?

  • @WalterG

    That server has had the Security Update for Lync Server 2013 (KB2992965) applied.

  • We are currently having the following infrastracture 2 lync edge servers lynce1 and lynce2, 2 lync front end pools lyncfe1 and lyncfe2, monitor lync server lynm and lync wac server lyncw. What are steps that I will need to accomplish to succesfully update all the servers. Do I need to update my lyncfe1 and 2 first by running LyncServerUpdateInstaller.exe then installing Installing Lync Database Updates on both of them one at a time, than "Step 3: Enable the Mobility service" and "Step 4: Enable the Unified Communications Web API" opn both of them one at a time, then do my mon and wac servers do monitor first than wac by just running LyncServerUpdateInstaller.exe, no additional cmdlets that I need for monitor and wac servers, than run LyncServerUpdateInstaller.exe on both edge servers, I assume no additional cmdlets that I will need to run? Is that the procedure for my environment?

  • You only need to run Steps 3, 4 and 5 if you are updating from the RTM version. Upgrading from a previous CU update only requires Steps 1 and 2.

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