Hello Kate,
In my previous post, I wanted to write that I have never seen this issue before. Also I do not know, what policy does Symantec use.
I have also installed Symantec, but does not block me any of the processes used by S32 Design Studio. But maybe, your customer should try to contact their IT support and ask them about Symantec settings and eventually ask about addition some exception for S32 Design Studio to Symantec rules.
Regards,
Martin