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Skype 2019 Migration - FailedToConnectToBackEnd RRS feed

  • Question

  • I'm picking up on an in-progress migration from Lync 2013 to Skype for Business 2019 that a prior co-worker was working on. We're going to do a Side by Side migration. Most of the steps in the Deployment Wizard have been completed, so we are on Step 4: Start Services.

    However, the "Skype for Business Server Front-End" service fails to start with the FailedToConnectToBackEnd error. I'm confused what this is referring to. We have a separate SQL server specified in the front-end pool for our Skype 2019 than our Lync 2013 server. I'm seeing Event ID error 32134, which states that it's trying to connect to database rtcxds on the new SQL server. However, none of these databases exist on the new SQL server yet. Should they exist? I know that the Central Management Store is migrated to the new SQL server as one of the final steps in this whole process, so don't these databases get created at that point?


    Tuesday, May 19, 2020 8:28 PM

All replies

  • Hi ChGPe,

    It recommends you make sure that you follow the steps to move the legacy Central Management Server to Skype for Business server 2019.

    1. To prepare an Enterprise/ Standard Edition Front End pool/ server.

    Install-CsDatabase -CentralManagementDatabase -SQLServerFQDN <FQDN of your SQL Server> -SQLInstanceName <name of instance>

    2.To move the legacy installs Central Management Server.

    • Enable-CsTopology
    • Move-CsManagementServer
    • In Skype for Business Server 2019 Deployment Wizard, click Install or Update Skype for Business Server System, click Step 2: Setup or Remove Skype for Business Server Components, click Next, review the summary, and then click Finish.
    • In Lync Server 2013 Deployment Wizard, click Install or Update Skype for Business Server System, click Step 2: Setup or Remove Skype for Business Server Components, click Next, review the summary, and then click Finish.
    • Reboot the Skype for Business Server 2019 server.
    • To confirm that replication with the new Central Management store is occurring: Get-CsManagementStoreReplicationStatus

    3.To remove legacy install Central Management store files after a move.

    As a supplement, when you do the migration, you could refer to the official guide of migrating to Skype for Business server 2019.


    Best Regards,
    Sharon Zhao


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Wednesday, May 20, 2020 7:01 AM
  • Yes, but that's step 8 in the migration. I'm still in step 4 of the migration (getting the services to start). Is this error expected, given that we haven't moved the central management store yet? Because it seems that this error is keeping the front-end service from starting.
    Wednesday, May 20, 2020 1:35 PM
  • Hi ChGPe,

    You need to deploy a new Skype for Business front-end server or pool in the original environment. It also needs to configure a SQL server if it is a new pool.

    For reference, you can read the following two blogs:

    http://blog.schertz.name/2015/06/sfb2015deploy1/

    http://blog.schertz.name/2015/06/sfb2015deploy2/

    Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.


    Best Regards,
    Sharon Zhao


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Friday, May 22, 2020 8:43 AM
  • Hi ChGPe,

    Is there any update on this case?

    Please feel free to drop us a note if there is any update.

    Have a nice day!


    Best Regards,
    Sharon Zhao


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Thursday, May 28, 2020 9:20 AM