Uninstalling the Knox Add-on for your Samsung device might take a few additional steps,
Please follow the instructions below to uninstall the Knox add-on:
1.Uninstall Knox add-on, and click on OK. (The Add-On won't be removed before you deactivate it.) This will allow us to deactivate the Add-On.
- Click on "Manage device admin apps" in the notification dropdown.
- Deactivate the Add-On and click OK.
- Uninstall Knox add-on. It should be removed successfully this time.