Hi, I recently encountered the same issue after updating the macOS system, and I just fixed it. This needs to be credited to Eskimo's response. Before I fixed the issue: security authorizationdb read com.apple.system-extensions.admin | plutil -p - YES (0) { "class" => "rule" "created" => 695120029.1478879 "modified" => 713695351.319139 "rule" => [ 0 => "is-root" ] "version" => 0 } That's strange, because there is no comment mentioned by Eskimo, and the rule is also incorrect. Then I reset the system extension authorization policy. sudo security authorizationdb reset com.apple.system-extensions.admin The authorization policy is now normal, and the system extension can be activated properly. security authorizationdb read com.apple.system-extensions.admin | plutil -p - YES (0) { "class" => "rule" "comment" => "Authorize a 3rd party application which wants to manipulate system extensions." "created" => 772013763.103967 "modified" => 772013763.103967 "rule" => [ 0 => "authenticate-admin-nonshared" ] "version" => 0 }