[LibX] false AVG malware warning due to GacMeUp.exe

Godmar Back godmar at gmail.com
Mon Feb 1 10:39:44 PST 2010

Short answer: this file is part of the LibX IE installer. It's a legitimate
It registers LibX in the registry, specifically the "Global Assembly Cache"
- hence the acronym 'Gac'.

Virus software may reject that if it is configured to detect and prevent
writes to the registry. However, there is no other way to install LibX/IE
than to write to the registry. That's also why Administrator access is
required to install LibX/IE.

So, configure your antivirus software to allow registry accesses by
GacMeUp.exe when installing LibX/IE.

 - Godmar

From: Colin Elliott <coline at athabascau.ca>

> To: libx-bounces at mozdev.org
> Date: Mon, 01 Feb 2010 11:10:08 -0700 (MST)
> Subject: AVG malware warning
> Hi,
> One of our faculty members reported that when installing LibX, AVG detected
> and removed GACMEUP.EXE because it was detected as malware.  Could someone
> confirm whether or not this was due to LibX?  Thanks
> ______________________________
> Colin Elliott
> Digitization Coordinator
> (780)675-6824
> Athabasca University
> http://www.athabascau.ca
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