I use ESET internet security. It works best for me and light on system resources. I don't require any other firewall or antivirus security software.
utorrent can be used with windows or any other firewall, can be whitelisted in all firewalls.
1- Setting/Advance - type sponsored and change " offers.sponsored_torrent_offer_enable " to False
2- Setting/Advance - type upsell and change " gui.show_plus_upsell " to False
3- Setting/Advance - type offer and change " offers.left_rail_offer_enabled " to false