Sophos Anti-Virus: error message when extracting downloaded IDE files

Issue

If you download the latest virus identity files (IDEs) from http://www.sophos.com/downloads/ide/ as a self extracting .exe file, when you try to run it, the executable displays an 'Out of memory' error and will not run on Windows 2003 or Windows Vista.

Operating system

Windows 2003
Windows Vista

What to do

Normally you should update IDEs automatically, by using EM Library and Enterprise Console.

However, if you do need to download IDE files directly, you must download the Zip file. This will work correctly on both Windows 2003 and Windows Vista.