title: MacOS High Sierra KEXT Loading - Are there any ways to cancel user approval?
body: <p>As some kinds of MacOS developers know, Apple implemented <strong><a href="https://developer.apple.com/library/content/technotes/tn2459/_index.html" rel="noreferrer">Secure Kernel Extension Loading</a></strong> .</p>
  
  <p>Users can approve third party KEXT by clicking <code>Approve</code> button in <code>Security and Privacy</code>.
  However, once the KEXT is approved, are there any methods for cancelling the approval?</p>
  
  <p>Imagine, the case of testing the app with KEXT loading, etc.</p>
  
  <p>If there are no way but the clean install, it's very difficult to test apps.</p>