Can you manage non-domain systems with a domain Functional Account (4320571)

Can you manage non-domain systems with a domain Functional Account

If your functional account is a domain account, then the system you want to manage has to be joined to the domain in question. Otherwise, the functional account will not have the option to login with it's domain credentials.

For a system(s) that is a member of a workgroup, rather than joined to a domain, you will need to use a Local Account that exists on this system(s) (such as the built in Administrator account) as the Functional Account.