Desktop Sharing not working on Skype for Business Server On-Premise RRS feed

  • Question

  • I'm having problem trying desktop sharing in skype for business On-Premise.

    During troubleshooting we identify the following TCP Port: 5370, 5365, 5357 and UDP 5388.

    Looking into MS documentation there is not any information regarding those port describe above.

    Those any body know what services is require for this particular ports?

    Thanks for you reply,


    Jose Ismael Batista

    Thursday, April 19, 2018 2:28 PM


All replies

  • Hi,

    please have a look at the Skype for Business 2015 Protocol Workloads Poster : https://www.microsoft.com/en-us/download/details.aspx?id=46448

    You need to check first if the issue occurs when its internal sharing or external sharing. Does problem occurs also when both clients are connected through internal/corp network?

    Please check you Edge servers as well, if all your subnets have been added.

    Please mark as helpful if you find my contribution useful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you. Thank you! Off2work

    • Proposed as answer by Alice-Wang Friday, April 20, 2018 5:41 AM
    • Unproposed as answer by Alice-Wang Friday, April 20, 2018 5:46 AM
    Thursday, April 19, 2018 3:19 PM
  • Hi Off2work,

    We are using internal/corp network, the problem is that Protocol Worklodas Poster not include the TCP Port: 5370, 5365, 5357 and UDP 5388 as part of the ports list.

    As soon as we open those port, desktop sharing work. We need to send the MS documentation to the security teem as part of formal request from Microsoft.



    Jose Ismael Batista

    • Proposed as answer by Alice-Wang Friday, April 20, 2018 5:57 AM
    Thursday, April 19, 2018 4:16 PM
  • Hi,

    Based on my research, you can refer to the documents below, check which port is required for desktop sharing



    Best Regards,
    Alice Wang

    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

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    • Proposed as answer by Alice-Wang Friday, April 20, 2018 9:43 AM
    • Marked as answer by ismaelbtt Friday, April 20, 2018 1:45 PM
    Friday, April 20, 2018 5:57 AM
  • Hi Alice,

    Thanks for the information, looks like the ports are part of the VbSS sessions, so the problem appears during desktop sharing feature. According with the information the client need the following port:

    Application sharing.


    Jose Ismael Batista

    Friday, April 20, 2018 1:48 PM