Changed email, asks for verification from the old email

Sometimes you can verify your account using another email address or a mobile number that you recieve a text to. If the email address is lost then try asking the recovery team to change your verification method to a different address or number and to use
a different email address instead of the old one.

Just thought of another thing;

5.) Why is there no verification email sent regarding a change of email address or location linked to the gamertag? It strikes me that all (?) of these instances could have been avoided if when the details were changed a simple verification email was sent
to the original email address asking them to authorise the change? Isn't that pretty much standard practice these days?

No. I am able to sign into my Xbox live account using the log in info. But the email itself has expired/been deleted a long time ago so I can’t log into the email itself. So when I want to access/change my account info and it asks me to log into my email and find the verification code, I am unable to do so. Again, I know all the info for the old expired email, I just can’t log into for the verification codes because it’s expired

Supposedly, you will be getting an email about changing the email to the account because that is the only way to change the email if that was your email before on that specific account. As it will send a verification code to complete the change. It does not change immediately without verification. Was your email also compromised before?

support.xbox.com/.../change-email-sign-in-for-microsoft-account

Here is a link to changing the email linked to you account. It does ask for an identity verification through the process.

Hopefully this answers your question.