You can't install norton on your system that is on your system becuase you might have a virus that is blocking the NAV.exe installation.
OR
You can have your system start in safe mode and do a scandisk after that restart your system then do the installation. If that doesn't work take your system off the network and try doing the installation, that might solve some of your woes.
Also, you can try installing the Norton from the server or another system to verify that there isn't such a policy.
PS. Norton can work on any operating system. That means any versions as well.