In recent installation of the Microsoft Office Web Apps Server (WAC) pool for Lync 2013, I had an issue which was not obvious, but spelled out obviously. If you have set up Lync 2013 and the Office Web Apps Server (WAC), and the Power Point sharing does not work, read on.
One thing must be pointed out. The bandwidth requirements for the early sharing session are large. One thing to make sure, is the media path isn’t the source of the issue because of lab type setups. Eliminate VPN, wireless, and other extra session (IP) candidate pairs. In other words minimize the number of IP subnets that can be involved. One rule I stick by is to test from the Inside out. Internal Clients on the local subnet; test the basics first. Second, check the whiteboard sharing. if the whiteboard works then you know you have some basic function to the WAC server.
If the Whiteboard works but the PowerPoint share does not, are you getting a network related error:
From this point, your issue will likely be one or the other. Either it will be related to steps below, of there is a media negotiation/network issue. See the Lync 2013 Protocols and Ports poster to find the network issue. If the network is solid and whiteboard sharing is working, what could the issue be? Complete the following troubleshooting:
- Applied Update KB2760445 after the WAC server is installed
- Install >net 3.5sp1 (which turned out not to be needed)Verified the hosting discovery URL was accessible
- (https://lyncFEweb.domain.com/hosting/discovery. (this will provide an xml with power point connection points)
- Restarted the WAC pool servers. There were three Web APP servers.
- Ran a packet trace on the client Ran a new-CsClsScenarion WAC and found failures to copy the wopi files .
- Verified the files were making it to the CMS share and the file path showed in the logs and in the share-(ex /DataCollabWeb/wopi/files/113-1-3F01C1B)
The issue was the Lync session did not seem to be talking to the WAC server. But I couldn’t find another error, other then Figure 1.
I found the issue in the Article reference called Validating the Configuration of the Office Web Apps Server. The last paragraph states (paraphrasing) even if the server looks configured correctly, you could still receive an error. That is exactly what happened to my case. Let me put the exact words:
“Even if Office Web Apps Server appears to be configured correctly, you could potentially receive the error message “Some sharing features are unavailable due to server connectivity issues” when you try sharing a PowerPoint presentation. If you receive that error message you should restart the Front End server (or servers) associated with the new Office Web Apps Server.”
So this is not a small point. If you restart the WAC servers and the FE servers, you may be restarting 6 or more servers. this was exactly what was required. In addition, After the servers are all up and started, it was required to wait for about 20 minuets before Power Point presentations would share successfully.