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This article lists the available updates for Microsoft Lync Server , and specifies the applicability of the updates for each server role. The latest update for Lync Server was released in July KB September cumulative update 5. KB July cumulative update 5. KB June cumulative update 5. KB January cumulative update 5. KB August cumulative update 5. KB April cumulative update 5. To install updates for a Lync Server installation that has had any of the following previous cumulative updates installed, follow steps 1 and Important Do not shut down or restart all Front End servers at the same time.
This may cause problems when you start the services. TMX file that is included in each cumulative update to correctly decrypt logs files. Important To maintain a functional Lync Server Enterprise Edition pool, make sure that Ready is returned for the State value of the pool when you run the Get-CsPoolUpgradeReadinessState cmdlet, and that you have the appropriate number of Lync Server front-end servers running.
The Cumulative Server Update Installer applies all updates for the appropriate server role in one operation. To use the Cumulative Server Update Installer, follow the steps in the following sections.
The front-end servers in an Enterprise Edition pool are organized into upgrade domains. These upgrade domains are subsets of front-end servers in the pool. Upgrade domains are created automatically by Topology Builder. You must upgrade one upgrade domain at a time, and you must upgrade each front-end server in each upgrade domain. To do this, take one server in an upgrade domain offline, upgrade the server, and then restart it.
Then, repeat this process for each server in the upgrade domain. Make sure that you record which upgrade domain and servers that you have upgraded. If you see Busy at least three consecutive times after you wait 10 minutes in between each attempt, or if you see any result of InsufficientActiveFrontEnds for the State value of the pool, there is an issue that affects the pool. If you cannot resolve this issue, you may have to contact Microsoft Support.
If this pool is paired with another front-end pool in a disaster recovery topology, you must fail over the pool to the backup pool, and then update these servers in this pool. For more information about how to fail over a pool, go to the following Microsoft website:. The Get-CsPoolUpgradeReadinessState cmdlet also returns information about the upgrade domains in the pool, and about which front-end servers are in each upgrade domain. If the ReadyforUpgrade value for the upgrade domain that contains the server that you want to upgrade is True , you can upgrade the server.
To do this, you must follow these steps:. Run the Cumulative Server Update Installer by using the UI or by using a command to upgrade the front-end servers that are associated with an upgrade domain.
Note If you upgrade or update front-end servers during scheduled server downtime, you can run the cmdlet in step 2 without the -Graceful parameter. More specifically, run the cmdlet as Stop-CsWindowsService. This action immediately shuts down services, and the server does not wait until each existing service request is fulfilled.
Note The UI provides a clear indication of which updates are installed when you click Install Updates. The following text describes parameters that you can use together with the LyncServerUpdateInstaller.
Run the Cumulative Server Update Installer by using the UI or by running a command line command to upgrade the front-end servers that are associated with an upgrade domain. To run the Installer, run the following command:. You can run the following parameters together with the LyncServerUpdateInstaller. After you install the update for the Core Components server role on a Lync Server Enterprise Edition front-end server or on a Lync Server Standard Edition server, the updated SQL database files are dropped to the computer that has the Core Components server role installed.
To apply the database changes, you have to run the applicable cmdlets that are described in step 2. You must do several configuration operations, depending on the kind of Lync Server Enterprise Edition back-end servers that you are using. If Persistent Chat is co-located Persistent Chat front-end service and back-end database are running on the same server , you must run the following command together with the ExcludeCollocatedStores parameter.
If database mirroring is enabled for the back-end databases, we strongly recommended that you use the Invoke-CsDatabaseFailover -NewPrincipal Primary command, and then verify that the primary server is principal for all databases before you run the Install-CsDatabase cmdlet. The command to run the tool is as follows:. Lync Server - Standard Edition server. Lync Server - Enterprise Edition - front-end server and back-end server.
Lync Server - Edge server. Lync Server - standalone Mediation server. Lync Server - Director server. Lync Server - Persistent Chat front-end server. Lync Server - Administration Tools. See the general information about the standard terminology that Microsoft uses to describe software updates.
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