I find that usually these security suites as well as driver and registry boosters (like IOBit) break this.
Examples at https://www.google.com/search?q=norton+interferes+with+homegroup
Am I the only one out here who finds Homegroup worthless? I've set up 3 computers here at home several times now with a Homegroup. All use Win10. Works okay the first time, then when I try to use it a few days later, none of the 3 machines ever heard of it; they all 3 say basically "uhhh...what the Hell's a Homegroup?"