Users can't sign in to Skype or Messenger by using their Microsoft account after Public IM Connectivity (PIC) or External Communications is enabled in Lync Online

Article translations Article translations
Article ID: 2537605 - View products that this article applies to.

Not sure what release of Office 365 you're using? Go to the following Microsoft website:
Am I using Office 365 after the service upgrade?
Expand all | Collapse all

PROBLEM

Consider the following scenario. A user uses an "email as sign in" (EASI) account or a custom domain as his or her Microsoft account to sign in to Microsoft services. For example, the user uses username@contoso.com. The domain in the user's Microsoft account is the same as the domain that Microsoft Office 365 uses. In this scenario, the user tries to sign in to Microsoft Messenger or Skype. However, the user can't use his or her current Microsoft account to sign in to either Messenger or Skype. Instead, the user is forced to change his or her Microsoft account so that it uses a different domain.

SOLUTION

To resolve this issue, use one of the following methods:
  • Method 1: For Office 365 Enterprise organizations or Office 365 for enterprises pre-upgrade organizations, disable PIC in the Lync Control Panel or Lync Administration Center. To do this, follow the steps on the following Microsoft website: 
    Configure external communications
  • Method 2: For Office 365 Small Business organizations or Office 365 for professionals and small businesses pre-upgrade organizations, disable External Communications on the Office 365 Service Settings page. To do this, follow the steps on the following Microsoft website: 
    Let Lync Online users communicate outside your organization
  • Method 3: Use a different domain for your Microsoft account, or use a different domain in Office 365.

MORE INFORMATION

This issue occurs if the following conditions are true:
  • The user's Microsoft account uses the same domain name as Office 365.
  • Public IM connectivity (PIC) is enabled in Lync Online for Office 365 Enterprise organizations or Office 365 for enterprises pre-upgrade organizations.
  • External Communications is enabled in Lync Online for Office 365 Small Business organizations or Office 365 for professionals and small businesses pre-upgrade organizations.
In this scenario, when the user signs in to Messenger or Skype, the user is forced to change his or her Microsoft account to use a domain that isn't in conflict with Office 365.

This issue occurs because of the way that the session initiation protocol (SIP) services are advertised. The Office 365 and Messenger environments can coexist if PIC or External Communications is disabled for the Office 365 domain. However, if PIC or External Communications is enabled for the Office 365 domain, the Office 365 domain becomes the authoritative SIP domain and hosts the service. Therefore, when a user tries to sign in to Messenger or Skype, the Microsoft account service recognizes that Office 365 controls the domain namespace and requires the user to change his or her Microsoft account to use a different domain.

Still need help? Go to the Office 365 Community website.

Properties

Article ID: 2537605 - Last Review: October 16, 2013 - Revision: 27.0
Applies to
  • Microsoft Office 365 for enterprises (pre-upgrade)
  • Microsoft Office 365 for small businesses  (pre-upgrade)
  • Microsoft Office 365 for education  (pre-upgrade)
  • Microsoft Lync Online
Keywords: 
o365 o365a o365e o365p o365m o365062011 pre-upgrade o365022013 after upgrade KB2537605

Give Feedback

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com