Article ID: 2000653 - View products that this article applies to.
You cannot sign in to Microsoft Office Communicator or Microsoft Lync in Microsoft Office 365 Dedicated, and you may receive the following error messages:
Microsoft Office Communicator error message:
Microsoft Lync error message:
Note Although this article may be relevant to several deployment scenarios for Microsoft Office Communicator or Lync, this article is focused on this issue in the deployment of Office 365 Dedicated.
This problem may be caused by the following:
Microsoft Managed Services Service Provisioning Provider (MMSSPP) provisions managed-account objects for Lync Online Dedicated. Customers use an entitlement attribute (for example, extensionattribute5) in their Active Directory Domain Services to signal MMSSPP to provision that object for Lync Online Dedicated. The extensionAttribute is specific to each customer.
Important If you are unsure which attribute that your company uses for Lync Online Dedicated entitlement, contact your Subject Matter Expert (SME) or your Microsoft Service Delivery Manager (SDM) for clarification.
The first step in troubleshooting an authentication issue is to determine whether the user is entitled for the service. If the user is not entitled for Lync Online Dedicated, continue to troubleshoot by using the following guidelines.
Verify that the user is using the correct sign-in address and associated domain credentials when the user signs in to Lync Online Dedicated. Typically, the user's sign-in address is the same as the user's email address. However, there are exceptions, and these exceptions are explained in the following:
Article ID: 2000653 - Last Review: April 10, 2013 - Revision: 16.0