Lync Desktop sharing fails when one user is internal and one is external in your network

Had a customer recently report that they weren’t able to perform desktop sharing with their clients outside of their corporate firewall. Looking at the reports showed this error ms-client-diagnostics: 24; reason=“Call failed to establish due to a media connectivity failure when both endpoints are remote”;CallerMediaDebug=”application-sharing:ICEWarn=0x320,LocalSite=xx.xx.xxx.x:xxx,LocalMR=xx.xx.xxx.xx:xx,RemoteSite=192.168.20.203:50045,PortRange=50040:50049,LocalMRTCPPort=57498,LocalLocation=1,RemoteLocation=1,FederationType=0″This usually is down to port configuration settings on your network…

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Conversation History not being saved in Lync…?

We’re seeing a lot of reported cases where customers conversation history is not being saved. The most common reason is that your mailbox may have over 1000+ folders, if you might be in this situation and your users are reporting this, then you can check their mailbox by performing this quick powershell cmd to count…

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