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UCWA mobile and SDK clients disconnect in Skype for Business Server 2019 (KB5005992)

Applies To

Skype for Business 2019

Symptoms

Unified Communications Web API (UCWA) mobile clients unexpectedly disconnect from SDK clients in Microsoft Skype for Business Server 2019.

Resolution

To fix this issue, install the December 2021 cumulative update 6 for Skype for Business Server 2019, Core Components.