Security Bulletin MS16-065 resolves a vulnerability in Microsoft .NET Framework. After this is installed on the Lync/Skype server, the Skype for Business client on the Surface Hub can’t connect to the Frontend server in order to download a PowerPoint presentation. If the Surface Hub is connecting through the external interface of the EDGE server, it will not be affected. The client side fix will be delivered in the Anniversary Update for the Surface Hub. Until the fix will be made available through Windows Updates to the Surface Hub, you can use the workaround detailed in this article.