I am trying to install Exchange 07 in CCr cluster and getting the following error. Please help![1/12/2009 8:12:49 PM] [2] Searching objects "UTHCMS1" of type "Server" under the root "$null".[1/12/2009 8:12:49 PM] [2] Previous operation run on domain controller 'utdc1.uthm.edu'.[1/12/2009 8:13:10 PM] [2] [ERROR] Cluster common transient exception: Unable to communicate with the Cluster service or the RPC service. Error: The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)[1/12/2009 8:13:10 PM] [2] [ERROR] The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)[1/12/2009 8:13:10 PM] [2] Ending processing.[1/12/2009 8:13:10 PM] [1] The following 1 error(s) occurred during task execution:[1/12/2009 8:13:10 PM] [1] 0. ErrorRecord: Cluster common transient exception: Unable to communicate with the Cluster service or the RPC service. Error: The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

Hi,Could you please tell us a little more of your setup?Is this error occurring when trying to install the passive or active node?The cluster service is running on the node?The file share witness is created?Leif

Is the cluster configured? Are you installing the active node? Go to a command prompt and enter "cluster group" to view the status of your cluster and ensure it is online.