[grace-baker Hexnode 12 March 2020 grace-baker Moderator]

Hey, Thanks for reaching out to us.

If this is a Samsung Knox or Android Enterprise enabled device, please navigate to Policies-> Android-> Advanced Restrictions-> Allow Account Settings. Disable the option Modify Accounts/Users. This will restrict the users from adding, removing and switching between the users. In the case of Android Enterprise enabled devices, the users will be blocked from adding, removing or switching between Google Accounts. Please note to associate targets and save the policy.

For more help, check out the help doc on restrictions for Android devices.

Cheers!
Grace Baker
Hexnode MDM