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ESET system extension blocked in macOS 10.13 (High Sierra)

Issue

You receive the notification "System Extension Blocked" in macOS

 

Multiple notifications

Occasionally, macOS will display multiple System Extension Blocked notification windows. In these cases, System extensions needs to be allowed once the same as only one System Extension Blocked notification was displayed.

You receive the notification "Your computer is not protected" from your ESET product for macOS


 

Details

macOS 10.13 (High Sierra) contains a security feature that requires a user approval before loading new third-party kernel extensions.

  • If you have installed the ESET product before the upgrade of your macOS to version 10.13, the kernel extensions are allowed automatically, and there is no action needed from the user.
  • When you are installing the ESET product on 10.13 or later, you need to allow the ESET kernel extensions manually. Physical access to the client machine is required—when accessing remotely, the Allow button is disabled.

See the Apple documentation on SIP.

Solution

Remotely approve the kernel extension

To approve the kernel extension loading remotely, we recommend that you follow Apple's guidelines:

https://support.apple.com/en-us/HT208019

https://developer.apple.com/library/content/technotes/tn2459/_index.html

 

If you receive "System Extension Blocked"

  1. Click OK.

Figure 1-1

  1. Click the System Preferences icon in the Dock  or navigate to the Apple menu and select System Preferences.

  2. Click Security & Privacy.

Figure 1-2

  1. Click the lock icon at the bottom left to allow changes.

Figure 1-3

  1. Click Allow next to System software from developer "ESET, spol. s.r.o." was blocked from loading.

    Allow button is disabled

    In some cases, the Allow button might be disabled. Possible reasons for this include:

    • 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.
    • Remote connection is open or was recently open on your computer. We recommend you to restart your computer to restore access to the Allow button.
    • You are using a third-party application to emulate mouse or trackpad (such as MagicPrefs, Synergy, BetterTouchTool ...). You need to close or uninstall this application in order to restore access to the Allow button.

Figure 1-4

  1. Restart your computer.

If you receive "Your computer is not protected"

  1. Click Open System Preferences.

Figure 2-1

  1. Click Security & Privacy.

Figure 2-2

  1. Click the lock icon at the bottom left to allow changes to be made.

Figure 2-3

  1. Click Allow next to System software from developer "ESET, spol. s.r.o." was blocked from loading.

    Allow button disabled

    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.

Figure 2-4

  1. Click Restart.

Figure 2-5



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