With the new macOS 10.15 (Catalina) released recently, the current Mac SEP client may or may not work with the current SEP 14 versions.
You will be pleased to know that macOS 10.15 Catalina will be officially supported in SEP 14.2 RU2 which is due to be released on or around mid-November 2019. Put this on your calendar!
A full list of Mac compatibility chart can be found at https://support.symantec.com/us/en/article.TECH131045.html including macOS 10.15 Catalina.
Time to get our test Macs upgraded to Catalina and ready to be tested as soon as SEP 14.2 RU2 appears! :)
What's your preferred testing method for this?