Unexpected symptoms occur when you create a My Site page in SharePoint Server 2010

Applies to: SharePoint Server 2010

Symptoms

Consider the following scenario:
  • You configure the User Profile Synchronization service in Microsoft SharePoint Server 2010.
  • You have an msOnline-UserPrincipleName attribute in the Active Directory domain schema.
  • You synchronize the user profile.
  • You create a My Site page for the user profile in SharePoint Server 2010.
In this scenario, some unexpected symptoms occur. For example, the URL of the My Site page is displayed as a cryptic string instead of as a user name.

Cause

This issue occurs because the msOnline-UserPrincipalName attribute is a reserved attribute in the Active Directory domain schema.

Resolution

To resolve this issue, apply the following hotfix:
2475878 Description of the SharePoint Server 2010 Cumulative Update Server Hotfix Package (MOSS server-package): March 3, 2011

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.