Why am I still able to download an app even though I have added it to the blocklist with the method addAppPackageNameToBlackList(), from the Knox SDK?

The addAppPackageNameToBlackList(packageName) API method blocks the app from installation. You can still be able to download the app from android app stores (for example: Google Play). The policy is enforced when trying to install the app, where the end user is presented with a message stating that the security policy prevents installation of this application.