After few weeks since last release of vSphere 5.1 U1, VMware released vSphere 5.1 U1a which fix vCenter SSO authentication issue. In vSphere 5.1 U1 release users found a bug which prevent to login to vCenter server domain user when SSO was attached to more than one Active Directory domains. See this link for more details http://blogs.vmware.com/kb/2013/04/alert-login-issue-after-updating-to-vcenter-5-1-update-1.html
This release of VMware vCenter Server 5.1 Update 1a offers the following improvements:
- vCenter Server is now supported on Windows Server 2012
- Additional vCenter Server Database Support: vCenter Server now supports the following databases.
- Microsoft SQL Server 2012
- Microsoft SQL Server 2008 R2 SP2
- Additional Guest Operating System Customization Support – vCenter Server now supports customization of the following guest operating systems:
- Windows 8
- Windows Server 2012
- Ubuntu12.04
- RHEL 5.9
