Legacy System Extension

On my late 2016 MacBook Pro (running MacOS Monterey 12.2.1), I get the below error message.

I understand developers have been told their legacy extensions will no longer be supported, but if my developer is no longer around, how do I find this extension and remove it?


I'm confident I no longer use the extension nor the software it might have been attached to.


MacBook Pro 15″, macOS 12.2

Posted on Mar 15, 2022 4:34 PM

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Posted on Mar 15, 2022 9:39 PM

Open System Information (About this Mac) and select Software > Extensions. You can sort the list so that all of the non-Apple extensions are together. Select each and see if you can find that developer’s name in the info panel.

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Mar 15, 2022 9:39 PM in response to Walt D in LV

Open System Information (About this Mac) and select Software > Extensions. You can sort the list so that all of the non-Apple extensions are together. Select each and see if you can find that developer’s name in the info panel.

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Legacy System Extension

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