Cannot get any WMI sensor to RPC to an Exchange 2013 server. I've checked everything down through nmap, wireshark and procmon and verified there is complete and consistent network connectivity to the server over port 135.
Interestingly there are only two RPC related processes I see in procmon on the Exchange 2013 server:
1.) Microsoft.Exchange.RpcClientAccess.Service.exe -> QueryOpen ->C:\Program Files\Microsoft\Exchange Server\V14\Bin\Microsoft.Exchange.RpcClientAccess.Service.exe.config SUCCESS
2.) store.exe -> RegQueryValue ->HKLM\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem\RPC Retry Count NAMENOTFOUND
Since both of these are Exchange related RPC, I've tried mail server specific WMI Sensors and still got PE015 RPC unavailable. This is a multi-domain environment and there are plenty of other servers with WMI sensors in this domain working OK, this is specific to my Exchange server.
Not sure where else to look, I've been through ALL the RPC related error documentation and tried it all. I'm stuck.