Symptoms
When you try to evaluate or import policies for registered servers by using Central Management Servers (CMS), you receive the following error message:
Value cannot be null.
Parameter name: source (System.Core)Resolution
Cumulative Update information
The issue was first fixed in the following cumulative update of SQL Server.
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. We recommend that you download and install the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.