App Lock feature x MyKnox from Samsung

I’m posting in behalf of another user: https://forum.avast.com/index.php?topic=196347.msg1364082#msg1364082

Avast's "App Blocking" does not work properly with the Samsung MyKnox App. I installed myKnox and installed avast. In this environment, I used avast Lock to restrict access to the myKnox 'Home' icon. In the main environment, outside myKnox, I also installed Avast and used the Application Lock to restrict access to myKnox. Should only be allowed after the Avast PIN has been typed in. Although Avast prompts for the PIN, by ignoring the typing, Avast allows me access to the environments.

What should I answer to him? Thanks.

MyKnox is not a classic app. The way it is designed we are probably not able to lock it.
However, why would the user want to use the app lock for MyKnox? It has its own in-built lock.
For better functionality you can advise the user to choose the knox style “Launcher”.