Article ID: 2465292 - View products that this article applies to.
Consider the following scenario:
To resolve this issue, install the following update rollup:
2579150Note If the Exchange Server 2010 Mailbox server role and the Exchange Server 2010 Client Access server roles are installed on the same server, you must grant the View Information Store Status permission to the NetworkService account to install this update.
(http://support.microsoft.com/kb/2579150/ )Description of Update Rollup 4 for Exchange Server 2010 Service Pack 1
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2465292 - Last Review: July 28, 2011 - Revision: 4.0