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Public Skype federation problems

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My Skype For Business 2015 installation is federated with public Skype since two years. Some users started to report delay and unable to send invites to pulbic skype accounts. This delay usually lasts two days and sometimes the communication with public accounts stop.
I checked SfB Edge status and all the services are running, ports are listenning and digital certificate isn't expired. Follow the SfB configuration:

PS C:\Users\administrator> Get-CsPublicProvider
Identity                         : Skype
Name                             : Skype
ProxyFqdn                        : federation.messenger.msn.com
IconUrl                          : https://images.edge.messenger.live.com/Messe
                                   nger_16x16.png
NameDecorationDomain             : msn.com
NameDecorationRoutingDomain      : msn.com
NameDecorationExcludedDomainList : msn.com,outlook.com,live.com,hotmail.com
VerificationLevel                : AlwaysVerifiable
Enabled                          : True
EnableSkypeIdRouting             : True
EnableSkypeDirectorySearch       : True

Versão do SfB 2015 Edge: 6.0.9319.259
Versão do SfB 2015 Front End: 6.0.9319.259

Is anything else I can check?

Monday, March 25, 2019 7:24 PM

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Have you submited the pic.lync?

-VerificationLevel UseSourceVerification
“Vote As Helpful” and/or “Mark As Answered” - MCSA - MCSE - http://www.ucsteps.com/

Monday, March 25, 2019 9:28 PM
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Hi rlpCTINET,

Which version of SFB client do the users use? Please try to use the SFB client latest version then check this issue again. Please go through the official document below and make sure all the settings work fine, and make sure your environment meets the requirements: Deploy Skype Connectivity in Skype for Business Server.

In addition, if all users have this issue in your environment, you could try to remove the PIC provider, then create a new PIC provider by running the following command:

Remove-CsPublicProvider -Identity <identity-name> New-CsPublicProvider -Identity Skype -ProxyFqdn federation.messenger.msn.com -IconUrl https://images.edge.messenger.live.com/Messenger_16x16.png -NameDecorationRoutingDomain msn.com -NameDecorationExcludedDomainList "msn.com,outlook.com,live.com,hotmail.com" -Enabled $true -EnableSkypeIdRouting $true -EnableSkypeDirectorySearch $true
Best Regards,
Evan Jiang

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- Proposed as answer by woshixiaobai Wednesday, March 27, 2019 9:32 AM
Tuesday, March 26, 2019 3:18 AM
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PS C:\Users\administrator> Get-CsHostingProvider

Identity                  : Skype For Business Online
Name                      : Skype For Business Online
ProxyFqdn                 : sipfed.online.lync.com
VerificationLevel         : AlwaysVerifiable
Enabled                   : True
EnabledSharedAddressSpace : False
HostsOCSUsers             : False
IsLocal                   : False
AutodiscoverUrl           :

Wednesday, March 27, 2019 11:32 AM
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Hi rlpCTINET,

Is there any update for this issue? If the reply is helpful to you, please try to mark it as an answer, it will help others who have the similar issue.
Best Regards,
Evan Jiang

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

Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

Friday, March 29, 2019 9:08 AM