System software from Legacy Developer was blocked from loading

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ApMaX Author

Level 2

154 points

System software from Legacy Developer was blocked from loading

System software from Legacy Developer was blocked from loading.

Apple - System Preferences - Security & Privacy - General

shows

System software from developer "Legacy Developer: Paceap" was blocked from loading

How to remove such message (other than allowing such legacy software)? I guess that it corresponds to these kernel extensions:

/Library/Extensions/PACESupportFamily.kext

/Library/StagedExtensions/Library/Extensions/PACESupportFamily.kext

System: macOS 11.6 (20G165) Big Sur.

Posted on Sep 26, 2021 4:36 AM

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Answer 1

Top-ranking reply

PRP_53

Level 10

90,979 points

Sep 26, 2021 4:56 AM in response to ApMaX

About system extensions and macOS

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Answer 2

ApMaX Author

Level 2

154 points

Oct 2, 2021 11:31 AM in response to Luis Sequeira1

I tried booting in safe mode to no avail. Besides being excruciatingly slow, it does not allow to move or delete it. How to delete it?

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Answer 3

Barney-15E

Level 10

116,074 points

Sep 30, 2021 4:09 AM in response to ApMaX

PACE is anti-piracy software usually bundled with audio software/hardware.

If you remove it, whatever software you have installed that used it will no longer work.

You should use the installer they provided, but can just remove the PACE extension from /Library/Extensions

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Answer 4

ApMaX Author

Level 2

154 points

Sep 30, 2021 4:26 AM in response to Barney-15E

Thanks. I do not know which software installed it.

I could manually remove it from

/Library/Extensions/PACESupportFamily.kext

but not from

/Library/StagedExtensions/Library/Extensions/PACESupportFamily.kext

How to remove the later?

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Answer 5

Sep 30, 2021 4:43 AM in response to ApMaX

Did you try simply restarting your mac?

Once you remove the extension from /Library/Extensions, it should probably not be loaded into StagedExtensions.

If it still shows, then try restarting in Safe Mode and see if you can remove it then.

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Answer 6

ApMaX Author

Level 2

154 points

Sep 30, 2021 11:55 PM in response to Luis Sequeira1

Thanks. I shut down and cold booted the Mac, yet

/Library/StagedExtensions/Library/Extensions/PACESupportFamily.kext

remains there. The "File - Move to Bin" shows gray dimmed.

How to delete such PACESupportFamily.kext item?

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Answer 7

ApMaX Author

Level 2

154 points

Sep 30, 2021 2:32 AM in response to PRP_53

Thanks, but how to remove such message (other than allowing such legacy software)?

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Answer 8

Sep 30, 2021 2:42 AM in response to ApMaX

You either allow it, or remove it. If it is there and you don't allow it, the system will block it every time and let you know.

The extension is probably in /Library/Extensions.

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Answer 9

Oct 1, 2021 1:42 AM in response to ApMaX

Did you try that in Safe Mode?

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System software from Legacy Developer was blocked from loading

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