Hi all,

Presence Federation between Skype and Skype for Business is working only one way. I can see the presence of the Skype User, but in Skype, the S4B User is always offline.

get-cspublicprovider shows the following:

-----------------------------------------------------------------------------

Identity                         : Skype
Name                             : Skype
ProxyFqdn                        : federation.messenger.msn.com
IconUrl                          : https://images.edge.messenger.live.com/Messenger_16x16.png
NameDecorationDomain             :
NameDecorationRoutingDomain      : msn.com
NameDecorationExcludedDomainList : msn.com,outlook.com,live.com,hotmail.com
VerificationLevel                : AlwaysVerifiable
Enabled                          : True
EnableSkypeIdRouting             : True
EnableSkypeDirectorySearch       : True
-----------------------------------------------------------------------------

In the Skype for Business Client the Settings are set to "allow everyone to contact me".

Any Ideas?

Hi,

Would you elaborate the Edge Server (certificate, DNS records)?

1. Please check if the needed federate ports open such as port: Access/SIP(MTLS)/TCP/5061 (the link below is for Lync Server 2013 but similar for Skype for Business Server 2015):

https://technet.microsoft.com/en-us/library/gg425891(v=ocs.15).aspx

2. Check the federate steps with the help of the link below:

https://technet.microsoft.com/en-us/library/dn705313.aspx?f=255&MSPPError=-2147217396

3. Check Skype for Business Topology, make sure you enable sip federation already.

Best Regards,
Eason Huang

Have you ever found a solution?
(We have exactly the same problem....)

regards
Martin