Norton is long gone from my Mac, but I still get message when I start Firefox

Factual Questions
1

When I start Firefox (e.g., after a crash, which happens all the time), I get the message:

“This version of Firefox is not supported by Norton Confidential,” etc.

I looked to see if any Norton stuff is still on my Mac. I couldn’t find anything (I probably deleted it more than 5 years ago). I looked to see if I had any related extensions. Again, nothing.

Any way I can get rid of this? And why does it still appear?

Thanks for your help!

2

The uninstall process could have left bits and pieces. As well, Norton, whose programs act similar to viruses, I kid you not. They place “tentacles” around almost everywhere in your system and slow it down measurably. I would look for some 3rd party registry cleaner to begin with. I like Ace Utilities, may not be viable for MAC. Maybe a 3rd party uninstall program which may actually see Norton as still around. Good program for Mac is “Cleanmymac”

3

Norton itself has a program to remove Norton software from a Mac. If I were you, I’d start with that before getting third-party utilities.

4

Well, MacOS doesn’t have a registry, but yeah, programs can leave tentacles on a Mac. Startup kexts, etc.

5

LOL, I have the windows brainwash mind

6

Thanks for the replies! Do you think Cleammymac could solve this? I’ve thought of giving that a try in the past.