The Proxy settings in Norman Security Suite is not honored. This means that it is currenly not possible to upate the program through a proxy.
There is currenly no solution available. We are working with high priority to fix this issue. As soon as a fix is available this article will be updated with a patch installer.
Update: The problem can be fixed by replacing c:\program files\norman\npm\bin\niu.exe with a new version. Please contact your local Norman support department to obtain the file.