I’ve noticed that I get asked at least once every few months to look at why sharing PowerPoint presentations in a new Lync Server 2013 deployment with Office Web Apps would fail with the error message:
Some presenting features are unavailable due to server connectivity issues.
If you try to share the same PowerPoint .pptx presentation, you would notice that the file was successfully loaded as indicated by the following message:
This File is Already in the Meeting
Rename and Attach
You’ve also confirmed that lal the Lync Server services have been started:
What I’ve noticed is that 9 out of the 10 times I get called for this is because .NET Framework 3.5 Features is not installed on the server:
This component is required for the Office Web Apps server when it is installed on either a Windows Server 2012 R1 or R2 server:
Hope this helps anyone who may run into this issue as there isn’t really a specific error logged in the events that points to this.