Meeting link is disabled in Skype for Business 2016 when Exchange servers of both organizations have TNEF disabled

Symptoms

When Transport Neutral Encapsulation Format (TNEF) is disabled in Microsoft Exchange servers of both organizations, an online meeting is displayed as offline in Microsoft Skype for Business 2016.

Resolution

To fix this issue, install the January 3, 2017, update (KB3128049) for Skype for Business 2016.