External user can't log in. RRS feed

  • Question

  • I use SFB 2015 and edge server. The external user can't log in. Is there any wrong with my environment.
    Monday, November 25, 2019 3:08 PM


  • Hi shane!

    What is your current environment? On-premise or hybrid integration with Skype for Business online?

    Does this issue persist all the time after you deploy Skype for Business 2015 and Edge Server?

    In my research, you can try to solve the problem in these ways:

    1. check your DNS record. These records are needed.
    2. check your control panel to see if your remote user access status is normal
    3. Check if the certificate for Edge Server meets the following requirement:
    4. Check if your Edge Server port and protocol configuration is correct.
    5. Use Lync connectivity analyzer to see if there is any error. The link is:


    For more details about Skype for Business 2015 Edge Server Deployment, please refer to:


    If your environment is hybrid integration with Skype for Business Online, you can also refer to:


    Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

    Best Regards,
    Jimmy Yang

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

    Tuesday, November 26, 2019 5:43 AM