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wmiapsrv.exe on Windows 7 probe uses too much memory



I have PRTG running on a Win 2008 R2 server with a probe on a Windows 7 64bit PC. I have noticed lately that getting information from WMI on the Win 7 PC has not been working, it returns an error 80041017: The query was not syntactically valid. Upon checking the wmiapsrv.exe in TaskMgr it is using over 1.3GB of memory. AFter rebooing the PC, I can see the memory usage of wmiapsrv.exe increasing, when I stop the PRTG Probe service, the memory usage of wmiapsrv.exe does NOT increase.

I have upgraded PRTG to the latest version today and the problem still exists.

prtg wmi wniapsrv-exe

Created on Apr 15, 2011 5:37:00 AM

3 Replies



Dear Martin,

is the underlying Windows fully patched? Just to check, it's the wmiapsrv.exe and not the wmiprvse.exe (for which there is a hotfix for the memory leak: http://support.microsoft.com/kb/981314/en-us )

Best regards.

Created on Apr 15, 2011 12:43:13 PM by  Torsten Lindner [Paessler Support]



Yes, it is fully patched, SP1 was installed a few days ago and any other fixes were applied after that. The problem was there before SP1 was installed. I did download that Hotfix but when I tried to install it, it said it could not do that on my system.

Yes, it is wimapsrv.exe and not wmiprse.exe


Created on Apr 15, 2011 1:27:19 PM



I have the same problem with PRTG running ON a Windows 7 machine. The default probe "Core-/Probezustand" causes WMIPRVSE.EXE logged in as NETWORK SERVICE to use up to 50% of both CPUs, with the same amount being used by SVCHOST.EXE. So sometimes it brings the machine nearly to a stop. As soon as I pause this probe in PRTG and terminate wmiprvse (it restarts automatically) the CPU Load remains at max 7% when the machine is idle.

Created on Aug 15, 2011 2:11:52 AM

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