Hi SolidWorks

I am working as a software deployer and I am trying to make a silent install of Solidworks for a client.

I found out that it was possible to use StartSWInstall.exe for this. It works fine (everything gets installed) when I run it in USER context but when I try to run it in SYSTEM context it briefly shows this window and then quits without any errors:

The command I am using to install the software is "StartSWInstall.exe /install /now /showui"

Why can't it install under SYSTEM context?

TIA!

/Emil