Managing personal Outlook.com account settings, security, and privacy
@Lee Smith said
I cannot login to my Xbox account .. Plus I think it has been hacked ... I want to change my email address
You can't make any account changes unless you can sign-in to the account.
Start with the Account Sign-In Helper and follow any suggestions it offers.
- In a Private/Incognito browser session, open: https://aka.ms/sign-in-helper
- Scroll down to "Choose how you normally sign in, then enter your details"
- Click "With an email address"
- Enter your email address and click [OK]
Try the Xbox Account Recovery Form
https://support.xbox.com/en-US/forms/recover-your-microsoft-account
If the hackers have changed all your security settings, the account is lost. I am sorry. I know that losing access to your account is more than just an inconvenience, it can cause real hardships. I wish I could give you another answer.