Consider the following scenario in a Microsoft Skype for Business Server 2019 environment or in a Skype for Business Server 2015 environment that has Skype for Business Server 2015 CU8 (January 2019 Cumulative Update) installed :

  • User A is an enterprise user.

  • User B is an anonymous user.

  • The AllowParticipantControl parameter is set to True in the conferencing policy.

  • The AllowExternalUserControl parameter is set to False in the conferencing policy.

  • User B shares an application or desktop to User A.

In this scenario, User A can't request control of the shared application or desktop to User B.


To fix this issue, install one of the following updates:

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