Skype for Business Online users can't communicate with external contacts
You experience one of the following symptoms in Skype for Business Online (formerly Lync Online):
- Instant messages aren't delivered to external contacts. When you try to send an instant message to an external contact in Skype for Business Online, you receive the following error message:This message was not delivered to firstname.lastname@example.org because the address is outside your organization and is not federated with your company, or the address is incorrect. Please contact your support team with this information.Note In this error message, email@example.com is a placeholder.The following error message may also be recorded in the Lync 2010 UCCAPI logs:403 Forbidden: From URI not authorized to communicate with federated partners.
- Presence is unknown for an external contact. When you search for the external contact, or you review an external contact who's already added to your contact list, the presence icon is unavailable (it appears dimmed), and Presence Unknown is displayed.
- External contacts can't join Skype for Business Online meetings. When the external contact receives a Skype for Business Online meeting invitation and then clicks Join Online Meeting, the user receives an error message that states that the person doesn't have permission to join the meeting, and the connection fails.
|Type and number of external contacts||One external contact||Multiple external contacts||All external contacts|
|External Lync contact||Permissions issue between contacts||Permissions issue between domains||External Communications disabled or Federation SRV record missing|
|Public IM contact (Microsoft Messenger, Skype)||Permissions issue between contacts||Contacts not added in correct format||External Communications for PIC disabled or Federation SRV record missing|
Configuring external communications for Skype for Business Online
- Other organizations that are using Skype for Business Online, Microsoft Lync Server 2010, Microsoft Lync Server 2013, or Microsoft Office Communications Server 2007 R2
- Public Instant Messaging (IM) contacts on Skype or Microsoft Messenger
For help configuring external communications for your organization, go to the following Microsoft website:
Resolving permissions issues between individual contacts
- Control access to your presence information in Lync 2010
- Control access to your presence information in Lync 2013
Generally for troubleshooting, if two external contacts have problems communicating, they should both completely remove the other contact from their own contact list. Re-add the external contact and then verify that notifications are being sent and accepted by each contact involved.
If you're trying to communicate with Skype users, make sure that the Skype users have upgraded to the latest client on Windows (version 6.3 or a later version).
Resolving permissions issues between domains
- The external contact’s domain isn't set up for federation.
- The domain isn't included on the allowed domains list in the Lync Control Panel or Lync Admin Center.
If the external contact’s organization hasn't been configured for federation with Skype for Business Online, go to the following TechNet website:
After you verify that federation is configured correctly for the external contact’s domain, Office 365 for enterprises customers should examine the Lync Control Panel or Lync Admin Center to make sure that the external contact’s domain is either on the allowed list of domains or not on the blocked list of domains. For guidance about how to configure external communications with other organizations, view the following Microsoft website:
Adding contacts in the correct format
Verify the Federation SRV record for Skype for Business Online
Note Federation with Skype isn't supported at this time. However, external contacts who have Microsoft accounts can log on to the Skype client instead of to Microsoft Messenger. Federation with Microsoft accounts is still supported, whether the external contacts use Microsoft Messenger or the Skype client. After an external contact who has a Microsoft account logs into Skype, the user will no longer be able to use video conferencing.
Still need help? Go to the Office 365 Community website.
Article ID: 2392146 - Last Review: 04/30/2015 23:15:00 - Revision: 49.0
- o365022013 o365 o365e o365a o365m o365p KB2392146