At reboot I see a message saying "Existing software on your system loaded a system extension signed by “Mark Moore”, which will be incompatible with a future version of macOS" How do I track this down?
MacBook Pro 13”, macOS 10.15
This is just a warning that this extension will not work in the future. You don’t actually have to do anything.
Anyway, the easiest way is to run Etrecheck. Its report will tell you all about any third party extensions, launch daemons, etc. You can get Etrecheck from the App Store.
Thanks It was the Plantronics headset kernel extension. Will keep an eye on that for future updates. It's also not a show stopper, so pleased to get to teh bottom of this. Thanks Luis!
How do I identify the software that has a legacy system extension
