Well, that's a false positive. We'll try to reach Symantec to report this, however, I doubt they will be fast to react. Can you let us know what's the exact reason Norton supposes our agent utility is a threat? Does it assign any name to it?

Hard to say - one rejection says SONAR protection picked up an unauthorized attempt to connect with PIAAgent.exe or something like that and another just said unauthorized connection attempted -- I'll clear the messages and attempt again in the morning and see if I can pin it down. The message telling me to reboot just gives a generic message like "you must reboot your PC in order to completely remove a security threat"

Does the same happen if you scan agentlessly? I still suspect it's just a reaction of Norton Antivirus for the attempt to deploy the agent utility remotely, I don't think it's critical, and it's definitely not a virus or any other suspicious behavior of Network Inventory Advisor. If possible, you should whitelist this activity.

Desktop Norton Client indicated PIAAGENT.EXE detected by Sonar - restart required to continue to remove the security risk