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I have successfully set up a failover cluster on Microsoft Server 2008 R2 Enterprise Edition. Now I want to talk to the MSCluster WMI Provider on said server. WMI Queries to e.g. CIMV2 successed. But queries like

select * from MSCluster_ResourceGroup where MSCluster_ResourceGroup.Name=\"testserver\"

fail with "Access denied". I am using a domain admin account.

Do I have to enable the MSCluster WMI Provider? What am I missing?

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Are you using imprsonate security? What language or scripting are you using? – Chris S Apr 14 '10 at 19:47
The program that sends the WMI query is running as domain admin. I guess it must be, otherwise IMHO I could not connect to classes in root\CIMV2 either. The programming language is C#/.NET - The weird thing is, that it works fine on a server 2003. When using a WMI Query Tool the tool does not even list any classes in root\MSCluster. – Tobias Hertkorn Apr 15 '10 at 9:00
up vote 1 down vote accepted

Did you see this blog article? Seems very similar to your issue.

The mscluster namespace requires encryption, so to connect to it you need to have a PacketPrivacy authentication level on your query.

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