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Bob Cross
Asked: 2009-05-16 11:37:16 +0800 CST

Is it possible to fix "Logon User Interface DLL acmsgina.dll failed to load"?

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Here is the scenario: installing an update to ActivCard (6.1) to a Windows XP laptop. After the required reboot, Windows XP brings up the default blue background, waits for quite a long time and then brings up the following dialog:

User Interface Failure

The Logon User Interface DLL acmsgina.dll failed to load.

Contact your system administrator to replace the DLL or restore the original DLL.

Serverfault seemed like a much better bet than trying to get a hold of our system administrators on a nice Friday afternoon....

EDIT: the machine cannot Safe Mode boot. It hangs at Mup.sys.

windows-xp login windows-registry dll smartcard

2 Answers

  1. Best Answer

    If the machine is up and running on the network, you should be able to use Regedit from another machine, do a "Connect Network Registry" to the failing machine and delete the following registry value:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GinaDLL

    After that, reboot the failing machine and it should revert to using Microsoft's GINA instead of the ActivCard GINA and you should be able to log on successfully (though not using ActivCard, of course).

    (I don't have experience with ActivCard, but I see this all the time with another third-party software that we use that has its own GINA. After rebooting and logging in, we have to reinstall the software. Whether that will also be the case with ActivCard, I'm not sure.)

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  2. PC Regedit is a free, Linux Live CD that boots into a registry editor. I was able to use it to resolve this issue for a co-worker.

    http://www.pcregedit.com/index.html

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