Windows 8 and 8.1 Forums


Windows host process (Rundll32) HIGH CPU usage

  1. #1


    Posts : 6
    Windows 8.1 Enterprise 64-bit

    Windows host process (Rundll32) HIGH CPU usage


    Hello,

    I have recently discovered that my laptop cooler was going crazy and I didn't knew why, then I started Task Manager and there it was "Windows host process (Rundll32) eating 30% of the cpu.

    Notebook specs:
    Cpu: Intel Core i5 3210m
    Ram: 8gb ddr3 1600mhz
    OS: Windows 8.1 x64 pro with the latest update

    Does anyone know how to find out how and/or why is it doing that?
    Thanks in advance.

    I added the requested info @arachnaut
    Attached Thumbnails Attached Thumbnails Capture.PNG   rundll32.png  
    Last edited by ONEoo7; 18 Apr 2014 at 10:21.

      My System SpecsSystem Spec

  2. #2


    Sunnyvale, CA USA
    Posts : 283
    Windows 8.1 Pro with Media Center (64-bit)


    Can you enable the Process name and Command line to the column list - that will help.
      My System SpecsSystem Spec

  3. #3


    Posts : 6
    Windows 8.1 Enterprise 64-bit


    I added another image with the info, hope it helps.
      My System SpecsSystem Spec

  4. #4


    Sunnyvale, CA USA
    Posts : 283
    Windows 8.1 Pro with Media Center (64-bit)


    AEINV.DLL

    Is part of the Customer 'Application Experience Program'.

    Maybe you should opt-out of that?
      My System SpecsSystem Spec

  5. #5


    Posts : 6
    Windows 8.1 Enterprise 64-bit


    Don't know how that option got checked, I would never opt in customer experience programs.
    Found it here:
    Control Panel\All Control Panel Items\Action Center\Change Action Center settings
    I changed it, and I will set the thread as solved if the problem disappears.

    Thanks again for the help
      My System SpecsSystem Spec

  6. #6


    Sunnyvale, CA USA
    Posts : 283
    Windows 8.1 Pro with Media Center (64-bit)


    It could be something else, please post your results.
      My System SpecsSystem Spec

  7. #7


    Posts : 6
    Windows 8.1 Enterprise 64-bit


    The results are good. I've basically used the same software in the same way and the problem never appeared again. After I changed that option I had to do a reboot, btw.
      My System SpecsSystem Spec

  8. #8


    Saint-Petersburg
    Posts : 1
    Windows 8.1 Pro x64 Russian


    Hi there! Having the similar issue.

    After about 5-7 minutes of idle, windows host process appears eating 15% of my CPU (i7-3770). Don't know whether the issue did appear on my previous CPU (i3-3220) - I just started noticing on new CPU that the cooler began produce much noise when my PC is idle.

    In my case the process is "rundll32.exe aepdu.dll,AePduRunUpdate". Sorry, but I cannot attach the screenshot, because as soon as I press PrtScr, the process disappears.

    Having Windows 8.1 Pro Russian.

    Also don't know if the solution of @ONEoo7 helps, but I can't find "Action center" in my localized version of windows. I have only "Windows Update center" ("Центр обновления Windows"), "Support center" ("Центр поддержки"), "Sync center" ("Центр синхронизации"). Can anyone attach a screenshot of a mentioned "Action center" so I could find it visually? Maybe it will help.
      My System SpecsSystem Spec

  9. #9


    Indonesia
    Posts : 17
    Windows 10 Home Single Language (x64)


    rundll32.exe is usually used by bloatwares. Try disabling Startup Programs. My highest usage is 97.8% because of Cinema 4D, but never reached 10%+ with rundll32.exe.
      My System SpecsSystem Spec

  10. #10


    Posts : 1
    Windows 8.1 Pro


    I have this issue too. I solved it by performing these steps:
    1. On windows 8.1 go to Charms -> Search. Enter "Schedule tasks"
    2. In the Task Scheduler window in the left hand pane expand "Task Scheduler Library" and go to Microsoft > Windows > Application Experience
    3. There should be 4 entries. The offender that causes the high CPU usage is "ProgramDataUpdater". You could disable it as some have recommended, however I opted to configure the task to kill it self if it runs for more than 1 minute:
    a. Right click on "ProgramDataUpdater" and go to properties.
    b. Go to the Settings tab. Ensure that the box next to "Stop the task if it runs longer than." is ticked (checked).
    c. In the drop down selection box, simply type in "1 minute" (or other time limit). Then click OK.
    I did this a few days ago and haven't experienced this issue since. I'm thinking about pushing it to 2 minutes to see what happens.

    At least this way if you install another Microsoft program that uses the application experience the issue won't come back. It will always kill itself if something goes wrong.
      My System SpecsSystem Spec

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Windows host process (Rundll32) HIGH CPU usage
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