That is pretty strange. I don’t think there is anything I can do about that from my end but I found this online about the topic. https://www.symantec.com/connect/forums/how-disable-wsreputation1-detection
There must be some way to whitelist files but if you aren’t sure how do that you can try what the people are suggesting in this thread. If you manage to get norton to let you play, I hope you have fun and let me know how you like the game. There is a pretty huge update coming to steam soon!