I’ve already written about many strange and hard to pin down error messages in Windows, so here’s another problem that I recently ran into on a client machine running Windows:

Host Process Rundll32 has stopped working

This message kept popping up whenever the user tried to open the Windows Security Center. It would pop up 10 times and then disappear. Nothing bad would happen to the system like a blue screen or crashing, but it was just annoying.

I’ve also seen this Host Process rundll32 error pop up when trying to open other programs, so it doesn’t seem to be associated with one particular program, which makes it all the harder to solve.

The first way to solve this problem is to try and remember which new software you just installed on your computer. It seems to be caused by one of several programs including Nero, Intel Viiv Software, Vegas Movie Studio, etc.

Method 1 – Update or Uninstall Nero Software

The first thing to try is to uninstall or update any Nero software on your computer. If you are running an older version of the Nero software, make sure to download the latest version that works with Windows.

If that doesn’t work, you can try this other method to fix the Nero problem:

Go to C:\Program Files\Common Files\Ahead\DSFilter and rename NeroVideoProc.ax to 1NeroVideoProc.ax. Also rename NeVideo.ax to 1NeVideo.ax. Reboot your computer and that should hopefully fix your problem if you have a Nero product installed.

Method 2 – Rename or re-register lmpgvd.ax

If you don’t have any Nero software installed, it could be caused by other programs such as Intel ViiV Software. If you’re not sure whether you have this software or not, you can go to the C:\Windows\System32 directory and search for the lmpgspl.ax file.

If it’s there in the system32 directory, rename it to 1lmpgspl.ax. Reboot your computer and see if the problem goes away. If not, you can try unregistering the lmpgspl.ax file using the following commands:

regsvr32 /u lmpgvd.ax
regsvr32 /u lmpgspl.ax
regsvr32 /u lmpgad.ax

Method 3 – Turn off Data Execution Prevention (DEP)

Another reason this error message could be coming up is if you have DEP running. DEP is a feature of Windows that prevents programs from running if it thinks there could be a problem.

You can turn off DEP by going to the command prompt and typing in the following command:

bcdedit.exe /set {current} nx AlwaysOff

Reboot and see if the problem has gone away!

Method 4 – Turn off thumbnails in Folder Options

If you are having this problem when viewing pictures or videos in Windows Explorer, you can try one more thing.

Go to My Computer and click on Tools and then Folder Options. On the View tab, check the Always show icons, never thumbnails box.

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Your problem should now be gone. Another program that can cause this problem is K-Lite Codec pack, so if you have that installed, make sure to download the newest version on uninstall it.

As a last resort, you may have a virus or spyware program installed, so run an antivirus program and see if it finds anything. Good luck! Post a comment if you have a questions. Enjoy!