Ability to add server roles in tri-existence mode will be blocked in Skype for Business Server 2019

Applies to: Skype for Business Server 2019

Summary


After you install this update, you will no longer be able to add Microsoft Skype for Business Server 2019 server roles to an environment that contains both Lync Server 2013 and Skype for Business Server 2015 server roles. When you try to deploy Skype for Business Server 2019 in tri-existence mode, you will be notified that it's an unsupported configuration.