My device should not be remotely managed. What can I do if I have the "Updates for this Mac are managed externally" message?

Acvine wrote:

What can I do if I have the "Updates for this Mac are managed externally" message?

Is this your personal machine?

Bought brand new?

or a used machine and/or a business machine.

If the device is bound to Enterprise, JAMF, MDM, active directory list (?)

Active Directory using Centrify

Mobile device management (MDM)

Device Enrollment Program (DEP)

Apple Configurator

Jamf Pro is comprehensive enterprise management

you will need to deprovision the device. If it was bought used it was not properly prepared for resale— contact the seller or return it for one that is free and clear.

What to do before you sell, give away, or trade in your Mac ...