Unable to Connect to Other Lync Organizations RRS feed

  • Question

  • Hi,

    Our domain is hosted on the Office 365 ( and got configured the DNS as requested on the admin portal.

    We are communicating with other organizations on the Office 365 with no issues.

    However, when I'm trying to add someone from Microsoft employees, or other organizations that are not hosted with Office 365 the users remain in the "unknown" status

    Sample of the other domains is ( where I contacted their admins and he confirms the publishing and settings are configured correctly.

    But I'm still wondering why I cannot communicate with MS employees!!!!

    Any idea?

    Monday, August 31, 2015 11:52 AM

All replies

  • In Office 365 SfB Admin portal configure external access as "On Except for blocked domains".               

    "You can control access to Skype for Business users in other organizations in two ways: 1) block specific domains, but allow access to everyone else, or 2) allow specific domains, but block access to everyone else"


    Monday, August 31, 2015 12:29 PM
  • Thanks,

    That already done, and basically after we did that we were able to communicate with other domains on Office 365

    Yet, I don't get it why I'm unable to communicate with MS team or users!

    Any other suggestions?

    Monday, August 31, 2015 5:59 PM
  • HI

    Could be the reason you Domain is not added in their federation list. You always require to add domain name in the federation list in the Lync control panel from both  side, weather it is on-prem/online.

    Hope this clarifies.


    Tuesday, September 1, 2015 5:50 AM
  • Well, that doesn't make sense!

    Do I need to add every domain to the list for my users to be able to connect with other organizations?

    Even worse, I need to communicate with other organizations and ask them to list our domain(s) in their Lync servers!

    As I understood, it's enough to enable the option "Let people in your organization use Skype for Business to contact people in other organizations" to get in touch with other organizations

    Unless you're pointing to something else, I don't think this is the issue.


    • Edited by Kinan Thursday, September 3, 2015 7:55 AM
    Thursday, September 3, 2015 7:45 AM
  • The organization you’re communicating with must also allow communication with your domain, so in your case you do not have any restriction on your side and you allowed open federation, but the organization on the other end needs to allow your domain as well.

    To your point, if you have other organization which are not on O365, you'll need to communicate with them and ask them to add your domain to their list, unless they are allowing open federation as well.

    Thursday, September 3, 2015 9:18 PM
  • Please check with your Microsoft Account Manager or representative to verify / add your organization as a Skype/Lync federated partner. This is necessary if a company does not operate in an open federation mode.

    Kindly share with us if this helps.

    Thanks / rgds,

    TechNet/MSDN Forum Moderator -

    Thursday, September 3, 2015 10:01 PM