WmiPrvSE.exe periodically spiking CPU usage and I/O on Windows 7 64 bit


  • I am running Windows 7 64 bit.  I have the latest updates installed.  I notice that the WmiPrvSE.exe process is jumping to about 50% usage.  Sometimes this is only for a few seconds, other times it is for a longer period of time.

    How can I determine the root cause?  I have searched other discussion forums for potential solutions and none have applied to me.


    The performance graph below shows my CPU usage spiking about every minute.


    Thursday, March 25, 2010 4:14 AM


All replies

  • Follow my guide here please:

    Do you see, which functions is called when the spike occurs?


    "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter
    Thursday, March 25, 2010 4:45 PM
  • Hi,


    You may also test the issue in Clean Boot to check if there are any software conflicts.


    If the issue persists in Clean Boot, I would like to suggest you run Process Explorer to check if there are any third party dll files are loaded by WmiPrvSE.exe and what are these third party programs?



    Arthur Li - MSFT
    Monday, March 29, 2010 1:57 AM
  • The culprit here is Acronis Managed Machine Service (mms.exe).

    I have disabled and stopped this service and my high CPU spikes are gone.  I will just enable if I need to use Acronis.



    Thursday, April 01, 2010 8:18 PM
  • Having the exact same problem. Had finally identified Acronis Managed Machine Service (part of Acronis Backup and Recovery) before finding this thread. Did you get any resolution? I am also on Windows 7 64-bit and also have disabled the service to avoid the high CPU. Sometimes the CPU will go to 100% and stay there so long the system dies and I have to reboot. Other times it will eventually recover but only have some significant time at 100% CPU. Will go back Acronis Home or another vendor but cannot live with this for sure.
    Sunday, May 16, 2010 12:15 AM
  • follow my guide and make a xperf trace! Which service/app is causing it? Is it really Acronis?

    "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter
    Sunday, May 16, 2010 12:53 AM
  • Dear sir,

    It is too easy to fix this issue, you have just to schedule avast to a boot-time scan mode, it will take let say 3 hours of scanning once your restart your PC, and everything will be OK ;) 

    Best regards

    Friday, August 30, 2013 11:51 AM