Troubleshooting Skype for Business integration
Last updated July 19, 2017 Skype for Business
There is an issue where non-Skype for Business participants will drop from a Skype for Business meeting after exactly 90 minutes. This is due to the Microsoft settings. For example, Skype for Business server has a setting which controls how long anonymous users are allowed in a meeting.
The setting is AnonymousUserGracePeriod and the default value is 90 minutes.
You can check the value with this shell command:
For more information, refer to Microsoft documentation.