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Unexpected disconnection occurs in Mediation Server of Skype for Business Server 2019 (KB5006005)

Applies To

Skype for Business 2019

Symptoms

Admitted PSTN users are unexpectedly dropped off the meeting when the organizer opens the call 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, Conferencing Attendant.