If you can't resolve the issue, you may have to contact Microsoft Support. If you see Busy at least three consecutive times after you wait 10 minutes between attempts, or if you see a result of InsufficientActiveFrontEnds for the State value of the pool, there's an issue that's affecting the pool. If the State value of the pool is Busy, wait 10 minutes, and then try to run the Get-CsPoolUpgradeReadinessState cmdlet again. On a Front End Server in a pool, run the following cmdlet: To upgrade Front End Servers, follow these steps: Make sure that you record which upgrade domains and servers were upgraded. Then, repeat this process for each server in the upgrade domain. To do this, take one server in an upgrade domain offline, upgrade the server, and then restart it. You must upgrade one domain at a time, and you must upgrade each Front End Server in each domain. Upgrade domains are created automatically by Topology Builder.

These upgrade domains are subsets of Front End Servers in the pool. The Front End servers in an Enterprise Edition pool are organized into upgrade domains. Note If User Account Control (UAC) is turned on, you must start the Cumulative Server Update Installer by using elevated permissions to make sure that all updates are installed correctly.ĭownload the Cumulative Server Update Installer. To use the Cumulative Server Update Installer, follow these steps. The Cumulative Server Update Installer applies all updates for the appropriate server role in one operation. Topologies and components for Front End servers, instant messaging, and presence See the 'Upgrade or Update Front End Servers' and 'Planning for the Management of Front End Pools' sections of the following TechNet topics to determine the State value of the pool before you apply the cumulative update:

Important To maintain a functional Lync Server 2013 Enterprise Edition pool, you must make sure that the State value of the pool is Ready when you run the Get-CsPoolUpgradeReadinessState cmdlet, and that you have the appropriate number of Lync Server 2013 Front End servers running. Doing this might cause issues when you start the services.

Important: Do not shut down or restart all Front End servers at the same time. To install updates for Lync Server 2013 RTM (.0), follow steps 1–5. To install updates for a Lync Server 2013 installation that has any of the following cumulative updates installed, follow steps 1 and 2. Move-CsUser is updated to enable moving users to Microsoft Teams after retirement of Skype for Business Online (KB5011927) Install Teams PowerShell Module after you install the February 2022 CU for Lync Server 2013 (KB5011923) This cumulative update makes the following improvements and fixes: Microsoft has released a cumulative update for Microsoft Lync Server 2013, Core Components. February 2022 cumulative update for Lync Server 2013, Core Components (KB5010850)

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