You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

How do I identify the software that has a legacy system extension

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

Posted on Oct 9, 2020 1:16 AM

Reply
Question marked as Top-ranking reply

Posted on Oct 9, 2020 1:27 AM

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.

2 replies

How do I identify the software that has a legacy system extension

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.