WMI and Citrix Xen App – Why is the service not running?

WMI -Windows Management Instrumentation – is the infrastructure for management data and operations on Windows-based operating systems – Basically it is used to provide information to monitoring tools such as MOM (Microsoft Operation Manager) and Edge Sight (A Citrix tool that provides monitoring and proactive management of desktops and XenApp servers in the enterprise)
So, if you are not monitoring the server using these two tools chances are you don’t need WMI service running. So the Citrix WMI in most cases is by default a manually started service.
If you have the Citrix License Server installed on your server then Citrix WMI is required
By The Way, Citrix has its subset of WMI called Citrix WMI service. It is a pre-requisite for some Citrix products but not others
Ex: If you have XenApp Fundamentals, WMI is not required, so the service can be disabled.

Note: The DLL ctxwmi.dll, is loaded by the Citrix WMI Service ctxwmisvc.exe when the service is running

some Citrix articles on WMI:
CTX108365 – http://support.citrix.com/article/CTX108365
http://support.citrix.com/article/CTX108911 (WMI repositories can be corrupted and must be recreated)

MSDN information on WMI


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