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Rundll32.exe nearly maxing my CPU out..

I started noticing that my computer was starting to slowdown pretty bad at random random times, so naturally I pull up task manager, I find that Rundll32.exe is consuming anywhere from 50%-100% of my CPU, so far I've ran Bitdefender and Spybot S&D no viruses/malware detected, I also disabled my screen saver because if I leave it unattended for more than 20 minutes my screen goes blank (almost like it has gone into sleep mode or something) and I have to wiggle the mouse to wake it up that didn't help either.. Any ideas or tips for me here guys? Any help is greatly appreciated, please and thanks.
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  1. what happened was your automatic update scan, thats supposed to run in the background and check your updates vs the servers got corrupted and now uses abnormal amounts of CPU. Basically, it developed a serious leak. No real way to fix it outside of a reinstall. But try this first Turn off automatic updates via by going to the run bar. Typing in 'msconfig' then search around till you find automatic updates and disable it.
  2. Turning off Automatic updates solved it, I may not even do a re-install if it keeps working this well, I'll just save a day once every couple of weeks to do updates not that difficult to do them manually. Thanks a ton for the help man, couldn't play meh games or anything for a while there lol...
  3. Hmm, it seems to be doing the exact same thing today even though automatic update is still turned off.. Was what you told me to do just a temporary fix until I did a reinstall or is it showing signs of a different problem?
  4. theburninator92 said:
    Hmm, it seems to be doing the exact same thing today even though automatic update is still turned off.. Was what you told me to do just a temporary fix until I did a reinstall or is it showing signs of a different problem?


    Rundll32.exe is a program that allows for standardized launching of shared logic contained within DLL files. DLL stands for Dynamically Linked Library. DLLs contain program code that is dynamically linked into a program when it is run, as opposed to statically linked into a program when it is compiled. This allows for easy portability between operating systems provided that the interface is the same.

    Rundll32.exe simply allows for named routines contained within DLLs to be launched without creating a program specifically to load and launch it. It's not uncommon for a few to run for a short period of time, nor for some to persist in the background. However, since it's a well known program name, malware occasionally masquerades with the same name. Under task manager you can enable the "Command Line" column to see exactly what was invoked for the process that's chewing up all your CPU time. You should see something along the lines of "C:\Windows\System32\rundll.exe <somefile.dll>,<some function name> [function arguments]".

    If the task does not begin with "C:\Windows\System32\rundll.exe" then it may be malicious software that is simply trying to obscure itself by adopting the same name. Without knowing the dll and function, it's not possible to know what's causing the problem.

    As a side note, you should reenable automatic windows updates
  5. "C:\Windows\System32\RunDll32.exe" "C:\Windows\system32\werconcpl.dll", LaunchErcAPP -queuerreporting Is what it says, and I re-enabled automatic updates as soon as I saw that it didn't permanently fix the problem.
  6. Best answer
    theburninator92 said:
    "C:\Windows\System32\RunDll32.exe" "C:\Windows\system32\werconcpl.dll", LaunchErcAPP -queuerreporting Is what it says, and I re-enabled automatic updates as soon as I saw that it didn't permanently fix the problem.


    That looks to me like it is attempting to find solutions to queued error reports that result from crashed programs.

    You can clean these up using the Disk Cleanup utility (scroll down and click all the checkboxes). That might help
  7. I am not the original poster but I did experience a similar problem. I found Pinhedd's information both in general about rundll32.exe and specificaly about the queued error reports very useful. However I was not able to use the Disk Cleanup utility to clean what appeared to be the System queued Windows Error Reporti... . I could delete the User queued Windows Error Reporti... . Deleting just the User queued Windows Error Reporti... was not enough to stop the RunDl32.exe processes (there were two). I ended both those tasks with the task manager and have not seen a reoccurrence in the 3 days since I did that on my winodws 8.0 enterprise system.
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