WMI Issue for Health checks on Win 2008

I am getting the following error when trying to setup Health checks on a new server. I have been able to setup the check on a second server that is identical.



Cannot access WMI on remote machine: OLE exception from "SWbemLocator": The RPC server is unavailable. Win32::OLE(0.1709) error 0x800706ba: "The RPC server is unavailable" in METHOD/PROPERTYGET "ConnectServer"



I have double checked that the account I am using has the correct permissions to the server. I have also allowed WMI through the windows firewall and started the WMI service.



Anything else I should try?

Something must be different in the setup of both machines.



Here is the knowledge base article in respect to the RPC server is unavailable error as returned by Microsoft

http://kb.serverscheck.com/index.php?page=index_v2&id=1&c=1

The KB article wasn't too helpful in resolving this issue.



I went into the advanced firewall inbound rules on the server and enabled WMI (DCOM-In) for Domain and Private profiles. This is for TCP port 135.



The weird part is I have this rule disabled (block the traffic) on my other server and the Health Checks work fine. Can you shed any insight on this?

Unfortunately from a distance there is not much we can do.



You might want to get the help from MS tech support or from a MS engineer as it can have a range of reasons but based on the fact that for one server it works and the other not, it must be some setting that is different.

Here are a few links that might help you:

http://support.microsoft.com/kb/884564

http://www.sophos.com/support/knowledgebase/article/108953.html

http://www.systemtools.com/board/Forum13/HTML/000023.html (for XP)

http://www.ureader.com/msg/1486331.aspx

http://www.tech-archive.net/Archive/WinXP/microsoft.public.windowsxp.wmi/2007-05/msg00006.html