Their uninstaller provided by the Maker, would fully remove all parts of this software.
This, prior any attempt at 'manual removal.' An exercise of the unnecessary, as Macs
do not get Virus. The cure is to not install the these 'self-defeating' circular logic items.
• Q: how can I uninstall Norton (symantec) antivirus from my Mac.. | Apple Community (2016)
https://discussions.apple.com/thread/7560254?answerId=30193516022#30193516022
To get the correct Uninstaller from Symantec may well require a new re-download of the App.
You may be able to search, if known, the locations where their Installer places parts(?)
This may help look for -and remove bits- of Symanetec AV &/or Norton AV.
Also it may require re-installing(?) the AV software to get their Uninstaller!!
• Uninstall Norton AntiVirus on Mac - Mac Expert Guide
https://macexpertguide.com/uninstall-norton-antivirus-mac-2015/
• Symdaemon Mac OS X CPU Usage Fix | Mac Expert Guide
https://macexpertguide.com/symdaemon-mac-os-x-cpu/
The following may work with all Norton products such as Symantec. Using these products
have been known to cause major issues, most remain hidden. Unless one uses 'Symantec
Antivirus Uninstaller' - or finds a workable 'norton program removal tool' a separate item.
• Remove all Norton programs for Mac using the 'RemoveNortonMacFIles' tool | norton
https://support.norton.com/sp/en/us/home/current/solutions/kb20080427024142EN
With recent versions of EtreCheck, or 'Malwarebytes for Mac' (free, from their makers)
these may be useful to look for, isolate, and remove oddities. Most veteran mac-users
know and/or have these 2 useful tools. ~ Mine get run 2x or 3, each year; only to look.
(Or erase/reinstall your MacOS from scratch? And try not to re-import Symantec w/ Time Machine?)😜
I'd done several searches to try & find some workable solution to this issue; bits and pieces as
found, were posted in this thread. Not all match; one remains throughout. Use their Uninstaller.
Good luck & happy trails!🌞🎣