Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi Alexandra, since your Hotmail address is flagged as part of a reserved domain, it can't be re-added directly.
If signing in or using the recovery page didn’t work, the account may be permanently deactivated.
You might need to contact Microsoft support directly for escalation. https://support.microsoft.com/en-us/topic/customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
Chard