Modern versions of Windows seem to have a "feature" wherein, at the login screen of a domain-joined machine, if "administrator" is entered as the username, it automatically switches from the domain to the local accounts. If you're trying to log in as "domain\administrator", you therefore always have to type in "domain", whereas this is not necessary for logging into any other domain account.
This is getting very annoying so I'm wondering if there is a way to disable this behaviour. Ideally I'd like to set group policy to stop it on all systems.
Web searches came up dry apart from the occasional mention of this "feature" as an annoyance.
I've never seen a way to disable this, but then it's never been that much of an irritaton to me. My genuine answer is to use proper, allocated administration accounts with real user names. Not only is it best practise, but it solves this issue instantly.
In my opinion, the
Administrator
domain admin account is there to get you started. After that, it should be disabled or given an extremely complicated password and left for emergencies only.