![Latest skype for business server version](https://cdn2.cdnme.se/5447227/9-3/screenshot_1_64e629469606ee7f889a24a7.jpg)
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UCWA client cannot make a call or join a meeting after installing Skype for Business Server update.
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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: 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.
![Latest skype for business server version](https://cdn2.cdnme.se/5447227/9-3/screenshot_1_64e629469606ee7f889a24a7.jpg)