![skype server 2015 skype server 2015](https://149371380.v2.pressablecdn.com/wp-content/uploads/2018/03/image-50.png)
537 (CU8) for Microsoft Skype for Business Server 2015, the Unified Communications Web API (UCWA) applications, such as Skype for Business on Mac, a web application for UCWA, and Skype for Business mobile clients, can’t make a call or join a meeting. For more information, see the following article:
![skype server 2015 skype server 2015](https://docs.microsoft.com/en-us/skypeforbusiness/sfbserver/media/e5511897-77bc-46aa-96be-85b126d7da79.png)
Skype server 2015 install#
Known issuesĪfter you install the January 2019 cumulative update. For more information, see the "Prerequisites" section. Important: The prerequisites for Skype for Business Server 2015 updates have changed because of the additional fix that's documented in KB 5006106.