Just a word of warning before you face a new world of angst/hurt, the new version of Norton (version 24) appears to suffer the same failings as the sonos app supposed ‘upgrade’. They are using the customers for QA !!! Head on over to the Norton forum for further info and turn off auto update till you see if the issues affect you.
*This has been a public service announcement by someone who is fed up of tech firms thinking ‘if it aint broke, then lets break it!’