I renamed my primary alias from @hotmail.com to @outlook.com, and now when I try to rename it back, I am getting an error message: There's a temporary problem with the service. Please try again. If you continue to get this message, try again later.

I'm aware that I would need to delete the @hotmail.com alias that was created when I changed to @outlook.com, however, my original @hotmail.com email address is not listed under aliases.

Edit: I have another alias @live.com. I tried to check if I could delete the @hotmail.com alias from my account (assuming it's just hidden from the aliases page) by using the F12 dev tools to change the javascript source for the remove link to pass through the @hotmail.com alias instead of @live.com (I tested this several times successfully with other aliases)

That delivered me to this page:

"We're unable to retrieve information for this section at this time. We're sorry for the inconvenience, please try again later."

Leaving me to believe that the @hotmail.com alias is not attached to the account.

I am still receiving emails sent to it, however