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External user get error while desktop/app sharing RRS feed

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    Hi

    I've got two Lync servers - internal and edge. Internal users can share desktops while conferencing. But external get errors though audio/video is good. The error in log file of external user:

    10/10/2014|15:35:42.494 E80:E70 INFO  :: CAppsharingMediaProvider::StartLogging: tracing enabled
    10/10/2014|16:10:34.445 E80:E70 ERROR :: CAppsharingMediaProviderSession::CompleteNegotiation - CAppsharingMediaProviderSession::CompleteNegotiation failed: lResult=-2147019873
    10/10/2014|16:10:34.490 E80:E70 INFO  :: CRDPRTPTransportStream::Terminate - MediaManager terminates appsharing media provider session
    10/10/2014|16:10:34.617 E80:E70 WARN  :: CAppsharingMediaProviderSession::AddAppSharingNode - no tns:InboundStream stream node
    10/10/2014|16:10:34.617 E80:E70 TRACE :: CAppsharingMediaProviderSession::AddAppSharingMetricsToReport: Condition failed with 80004003: 'spAppShareNode != 0'. Invalid spAppSharingNode pointer
    10/10/2014|16:10:34.617 E80:E70 WARN  :: CAppsharingMediaProviderSession::GetQoEData - AddAppSharingMetricsToReport failed hr = 80004003
    10/10/2014|16:10:34.748 E80:E70 INFO  :: CRDPRTPTransportStream::Close - RDP session closed

    Friday, October 10, 2014 2:05 PM

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    Here is error 

    10/10/2014|16:10:34.445 E80:E70 ERROR :: CAppsharingMediaProviderSession::CompleteNegotiation - CAppsharingMediaProviderSession::CompleteNegotiation failed: lResult=-2147019873

    http://blogs.msdn.com/b/pareshj/archive/2012/12/04/lync-desktop-sharing-fails-when-one-user-is-internal-and-one-is-external-in-your-network.aspx

    Either the external or the internal client is have issue reaching the AV edge server 

    Please remember, if you see a post that helped you please click "Vote As Helpful" and if it answered your question please click "Mark As Answer" Regards Edwin Anthony Joseph

    Friday, October 10, 2014 3:22 PM
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    Hi vden,

    For Lync Server 2013, the reverse proxy provides remote access to the web components running on Front End Servers or Edge Servers. It includes web conferencing content(Whiteboards and PowerPoint File Uploads)

    The media traffic of desktop sharing are handled by Edge Audio/Video Service. Remote users, require Edge Server to handle Application Sharing sessions. The sessions run over the Secure Real-time Transport Protocol (SRTP) through the A/V Edge Server interface. See Determining External A/V Firewall and Port Requirements for more details.

    http://technet.microsoft.com/en-us/library/gg425882.aspx

    Here is a great blog how to troubleshoot the desktop sharing issue.

    http://blogs.technet.com/b/nexthop/archive/2012/11/05/lyncmd-troubleshooting-lync-server-2010-application-sharing-internal-and-remote-scenarios.aspx

    You can refer to Scenario 1 that described External Lync clients are unable to share their Desktop or Applications with internal conference participants. Please double check the required ports.

    Best regards,

    Eric

    • Marked as answer by Eason Huang Monday, October 20, 2014 1:54 AM
    Monday, October 13, 2014 6:32 AM
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    Hello Dear,

    Did you solve the issue? please help, i have the same issue.

    Thanks,

    Abdelkirme

    Thursday, January 23, 2020 6:52 PM