Rthdcpl.exe – Illegal System DLL Relocation

Recent security updates to XP SP2 break the Realtek HD Audio Control Panel. People will see errors displayed when it attempts to start. Here is the fix…


Patching the most recent XP .ANI exploit breaks the commonly used Realtek Control Panel. The program will not start and frequently an error like this is seen:

    Rthdcpl.exe – Illegal System DLL Relocation

    The system DLL user32.dll was relocated in memory. The application will not run properly. The relocation occurred because the DLL C:\Windows\System32\Hhctrl.ocx occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.

The Realtek HD Audio Control panel can just be uninstalled.

If you like its features, first try updating your Realtek drivers. This fixes the issue in most cases.

You can also use this hotfix from microsoft.

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One Response to “Rthdcpl.exe – Illegal System DLL Relocation”

  1. February 28, 2009 at 7:21 pm, Burton Leed said:

    Many out there believe they have downandup when they really have the realtek audio virus.
    Because they cleverly made the dll’s to use system memory the machines crash and reboot
    just like down and up. Realtek put me through real hell.

    Run the microsoft solution and the f-secure check, then just get rid of the realtek drivers.

    Reply

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