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Hi, how do I identify which program is running legacy system extension(s)?

With the latest OS system update, 6/26/20, I got a notice that a legacy sytem extension is running. Consider notifying the developer for updates. How do I identify the program?

iMac 27″ 5K, macOS 10.15

Posted on Jun 26, 2020 9:46 AM

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Posted on Jun 26, 2020 10:25 AM

I suggest that when you are offered the OS upgrade to Big Sur you visit the web site of each software vendor. They should have information there as to whether they have that compatibility, as was the case with the 32 to 64 bit issue. If you have an important app which has not been upgraded you may want to wait a while before installing Big Sur so the upgrade can be offered. All vendors have been advised as to what needs to be done and I assume they are working to do so. There is no other quick way to accomplish this at this time.

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Jun 26, 2020 10:25 AM in response to AnitaIsMad

I suggest that when you are offered the OS upgrade to Big Sur you visit the web site of each software vendor. They should have information there as to whether they have that compatibility, as was the case with the 32 to 64 bit issue. If you have an important app which has not been upgraded you may want to wait a while before installing Big Sur so the upgrade can be offered. All vendors have been advised as to what needs to be done and I assume they are working to do so. There is no other quick way to accomplish this at this time.

Jun 26, 2020 10:35 AM in response to AnitaIsMad

You should always wait a few iterations of a new OS to get the bugs worked out, that's likely a year from now!


No need to worry, but to see them, just don't upgrade to 10.16 if the developers don't have updates...


About this Mac>System Report>Software>Extensions, click on Obtained from Header, all that aren't Apple are Legacy.

Hi, how do I identify which program is running legacy system extension(s)?

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