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

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Article ID: 2537605 - View products that this article applies to.
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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 Skype. However, the user can't use his or her current Microsoft account to sign in to 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, disable PIC in the Lync Control Panel or Lync Administration Center. To do this, follow the steps on the following Microsoft website: 
    Let Lync Online users communicate with external Lync or Skype contacts
  • Method 2: For Office 365 Small Business 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.
  • External Communications is enabled in Lync Online for Office 365 Small Business organizations.
In this scenario, when the user signs in to 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 Skype 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 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: June 25, 2014 - Revision: 28.0
Applies to
  • Microsoft Lync Online
Keywords: 
o365 o365a o365e o365p o365m o365022013 KB2537605

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