Norton family does not launch

Hello,

I have bought and installed Norton 360 multidevice. No problem.

I have installed as well Norton Family.

I have installed it on 2 computers (windows 8.1 pro and Windows 7 Home, all 64nits), no problem.

 

I try to install it on the 3rd computer (Windows 7 home) and I have issues.

The installation went well. The program is installed but does not work.

I have compared my two computer on windows 7, they have the same configuration.

 

What I have noticed is that NF.exe is started one computer (the one NF works) and is not started on the other.

So I tried to launch NF.exe manually but does not work. I tried as administrator and with compatibility modes as well.

I watched the processus and services.

The service "Norton family" is stopped. when I tried to start it manually, a few seconds later, it stops.

 

I don't understand what's goinf on.