Symptoms
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.
Resolution
To fix this issue, install one of the following updates:
-
For Skype for Business Server 2019, install the December 2019 cumulative update 7.0.2046.151 for Skype for Business Server 2019, Enterprise Web App.
-
For Skype for Business Server 2015, install the July 2019 cumulative update 6.0.9319.559 for Skype for Business Server 2015, Enterprise Web App.