After Big Sur upgrade, several apps do not work, claiming that the Mac must be reset. Resetting does not help, same error.

After Big Sur upgrade, several apps do not work, claiming that the Mac must be reset. Resetting does not help, same error. So far, Parallels and Acronis have failed, despite reboot and despite reinstall. Does anyone have a solution, other than ridding myself of my many Macs?

MacBook Pro

Posted on Nov 16, 2020 9:03 AM

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Posted on Nov 17, 2020 9:52 AM

Big Sur breaks third party extensions. I assume app developers will eventually figure out whatever magic incantation Apple intended them to use during installs. In the mean time, this worked for me:


I think this forces all apps that rely on extensions to re-authorize them.


  • Open Terminal.app and run df -h /:


For example, on my machine, my OS drive volume name is on /dev/disk1s5


  • Make a note of your volume name.
  • Boot to macOS Recovery (cmd+R while rebooting/starting).
  • Run Terminal.
  • Enter the command: kmutil trigger-panic-medic --volume-root /Volumes/<YourVolumeName>


Replace <YourVolumeName> with the volume name where your Big Sur is installed, i.e. /Volumes/dev/disk1s5


  • Restart your Mac.
  • When prompted, re-authorize the extensions.
19 replies

Nov 17, 2020 4:02 PM in response to jofas

I don’t believe that those Apple apps use any extensions. I would guess that your problem is something else.


I’m sorry that I can’t offer anything better than to try an OS reinstall, which should touch all those apps (except perhaps FaceTime). A MacOS reinstall is easy-peasy, it just takes some time. Your files, settings and so on won’t be affected. As per https://support.apple.com/en-ca/HT201255 you could start by rebooting and holding Command-R until you hear the chime/see the progress bar. You will see an option to reinstall from the recovery partition.

Nov 17, 2020 5:57 PM in response to chortick

Thanks all for the help. I tried safe mode, and reinstall. Neither worked.


I can see in system log that the following error pops up every 10 seconds. I also see a crash report of this "ContactsAccountsService" process ever a few hours. I guess that would require someone with inside knowledge to figure it out.


Nov 18 12:54:11 Josh-iMac-966 com.apple.xpc.launchd[1] (com.apple.AddressBook.ContactsAccountsService[2670]): Service exited due to SIGILL | sent by exc handler[2670]

Nov 18 12:54:11 Josh-iMac-966 com.apple.xpc.launchd[1] (com.apple.AddressBook.ContactsAccountsService): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.



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After Big Sur upgrade, several apps do not work, claiming that the Mac must be reset. Resetting does not help, same error.

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