Windows 10: 3 RunDll32 processes opening on startup

Discus and support 3 RunDll32 processes opening on startup in Windows 10 Support to solve the problem; Hi all, (First off, I'd like to say that I've never done one of these before, so apologies if I lack the etiquette for this situation!) I'll keep... Discussion in 'Windows 10 Support' started by ChefBero, Oct 2, 2020.

  1. ChefBero Win User

    3 RunDll32 processes opening on startup


    Hi all,

    (First off, I'd like to say that I've never done one of these before, so apologies if I lack the etiquette for this situation!)

    I'll keep this short and sweet:

    On startup, one rundll32 process is always opening (the one highlighted in the image), and shortly after a second one appears, and then a third one. They aren't in the startup tab of task manager, but they open every time. This worries me because...

    1. I have had malware / trojan issues previously on this pc, but have reset it since and all has been well, except for this.
    2. After looking online many people say that this is an indication of malware / bad business in general.

    I've attached a screenshot of these in task manager as well as their file path.

    Is there something wrong here?

    [Windows Version number: Version 2004 (OS Build 19041.508)]


    3 RunDll32 processes opening on startup [​IMG]

    :)
     
    ChefBero, Oct 2, 2020
    #1
  2. hsehestedt, Oct 2, 2020
    #2
  3. DaveM121 Win User
    Windows host process rundll32 running 19 instances

    That is certainly not normal, you will need to find out what processes are running on rundll32.exe

    Rundll32 is just a host for other processes to run, to find out exactly what is running on this process, Click HERE to download the free ProcessExplorer
    from TechNet

    The app will download in a zip file (approx 1.84mb), unzip it and run the appropriate version (32bit or 64bit) for your system by right clicking the exe and choosing 'Run as Administrator'

    You’ll want to choose File - Show Details for All Processes to make sure that you’re seeing everything

    Hover over the rundll32.exe in the list, you’ll see a tooltip with the details of what it actually is:


    3 RunDll32 processes opening on startup 46b7762b-f570-4f67-91d6-cdbc93658a92.png


    Alternatively you can right-click, choose Properties

    Then take a look at the Image tab to see the full pathname that is being launched

    You can see the Parent process, which in this case is the Windows shell (explorer.exe), indicating that it was likely launched from a shortcut or startup item.


    3 RunDll32 processes opening on startup 5cbd5aa3-2611-42a6-887d-265e98758083.png


    In general, processes running on rundll32.exe can be stopped from running when Windows starts up as follows:

    • Press Windows + R keys together to open the run dialog
    • Type msconfig and hit enter
    • On the Startup Tab will be a list of processes that start with Windows
    • Check the box marked Hide all Microsoft Services'
    • Look down through the remaining list for items containing 'rundll32'
    • If you find any erroneous entries, uncheck them . . .
    • BE CAREFUL not to uncheck items like nVidia items which sometimes use rundll32


    3 RunDll32 processes opening on startup a2575ab0-bcc0-4c79-abbd-5f502fa66ace.jpg
     
    DaveM121, Oct 2, 2020
    #3
  4. DaveM121 Win User

    3 RunDll32 processes opening on startup

    OVER 160 RunDll32.exe in TASK MANAGER !

    Have you got lots of Rundll32.exe or svchost.exe processes running, or both?

    On a normal Windows 10 system, you should not have any Rundll32.exe processes running at all. Check your startup apps the see what is causing this:

    • Press Ctrl + Shift + Esc together to open Task Manager, click on the Startup Tab and see if there are any entries that are starting under rundll32, if there are, disable them
    • Press WIndows + R keys together to open the run dialog, type msconfig and hit enter. Click on the services tab and check the box marked 'Hide all Microsoft Services'. Then scroll through the list of services looking for rundll32 entries, if you find any,
      uncheck them and reboot

    With regards to svchost, i have noticed a huge increase in the number of these processes since the Creators Upgrade - I have 77 currently running on my system. They all are using 0% processor and HDD and on average about 1MB - 2MB, though this number does
    seem excessive . . .
     
    DaveM121, Oct 2, 2020
    #4
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3 RunDll32 processes opening on startup

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