How to transfer (old email) existing xbox account -> (new) existing main email account?

Hi there! This is Ronnie, an independent advisor.

Nice to meet you and I hope you are having a great day!

I understand you need help with changing your email or alias to the account.

Just a heads up, the error you are getting means that the email you are trying to use to replace the old email is already being used on another Microsoft account.

You cannot use an email that is already tied up to a Microsoft account to change an email on an old Microsoft account. You need an email that has not being tied up to any Microsoft account yet so you can change your old existing email.

If you still want to use that email, I suggest removing that from the Microsoft account by changing it first with another email (can be a dummy email as long as it does not have a Microsoft account) So that you can free it from that account and use it to change your old one.

Note: This should also be a third party domain, first party domain will not work (Hotmail, outlook etc.)

You can check this link for more details:

https://support.microsoft.com/en-us/account-bil...

Well, no, because the Xbox account didn't exist until I made it. I could have used this email as the alias for my old account had I not mistakenly signed up for a new Xbox account with it. I made the Xbox account, so why can't I delete it from existence, and then use this email as the alias for my old Xbox account?

You can't transfer data like the between accounts. But you can change the email associated with accounts. You may just want to put the existing account on a new email that's theirs

You cannot transfer digital content between accounts, so the transfer to a completely new account is not possible. You can associate a new email to the account though and eventually remove the old one, so you do not use an existing one.

Here all the possible actions in this regards are explained:

https://support.microsoft.com/en-us/help/12407/microsoft-account-change-email-phone-number

As mentioned you can attach a new email to the account but you can't transfer account purchases between accounts. You may just want to add another email to the existing one so your current email is free to make another account