@JaxxAI @GossiTheDog nothing to do with the domain. You can register a MS account with your own email address, that's what that is. a@a.com is also (not) working and blocked now, so the account tool is skipping because of the blocked account error and let's you create an offline account as a fallback. But very annoying they again removed the option to do that ina regular way without having to use such measures.