nats-server killed by antivirus after 4-5 minutes

[Johan Johansson]

Hi group

I have a Windows 2019 server where we use nats-server (v2.11.9-windows-386) running as a Windows service.

It works well for days, unless I have webroot antivirus turned on, during which it dies after 4-5 minutes. There is nothing in the nats log, just a record in the event log that the process died unexpectedly. There is no indication in the AV that anything has been detected as a virus or similar. This is under very little load. The jobs that are sent through nats.io triggers some file reading activities (in c:\programdata) but nothing out of the ordinary.

Currently the service runs using the SYSTEM account, but I will try to use a less privileged account to see if this helps. Default port 4222. 

Anyway, does anyone know if this is a known issue? I will have a call now with Webroot to see what they can find but from previous experience they are going to blame the application.

Thankful for any input,
Best regards

Johan