Windows 10 Pro (UPGRADED FROM HOME) cannot join to domain only in Anniversary Update 1607

I have a room full of machines that I have been upgrading from home to pro (Windows 10). All machines that are NOT anniversary update 1607 can be joined to a domain with no issues. All that are the anniversary update will allow me to join to the domain and it restarts and asks for the useame and password. Put in my credentials and it provides a generic "cannot log you in" error message.

I've also noticed lusrmgr.msc is missing (Local users and groups) in all of these 1607 upgrades. The earlier build -- no issues and lusrmgr is available.

It's my understanding pro should be able to be joined to a domain. Is this not the case? Thanks ahead of time! :)

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