MacOS High Sierra, Mojave, Catalina, Big Sur, Monterey - Kernel extensions

Since MacOS High Sierra and follow up versions, kernel extensions must be approved by the user.

• During the installation, a "System extension blocked" message shows up, click on OK to unlock the Merging kernel extension.
  
  

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• If this message is ignored, a message will be displayed for 30 minutes in System Preferences > Security and Privacy.

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  Until the user approves the extension, future load attempts will cause the approval UI to reappear but will not trigger another user alert.

• Physical access to the computer is required to allow the kernel extensions. The Allow button will be disabled if you are remotely accessing the computer.

• The kernel extension has to be authorized the first time you install.

• When upgrading from Sierra to High Sierra, Approval is automatically granted to third-party KEXTs that were already present before the upgrade.
  
  

• To check if the Merging CoreAudio kernel extension is valid, you have to open the Terminal then type:
  kextstat | grep -v com.apple
  The merging kernel extension should be displayed in the list.

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