why does microsoft not recognize my account

Update

Although it shows my email, it does not recognize my password. After it did not accept my password I changed it for my microsoft account.

I suspect that it is spoofed.

Why does it work fine on a computer but is not recognized on the Xbox?

Hello, Andrei. Thanks for reaching out. I'm Lucas, an Independent Advisor and a Microsoft user just like you. I'll be glad to help you out.

You probably received an email from Mojang when you migrated your account. If the confirmation email is there, it is the right account.

To check what Microsoft account is associated with your gamertag/Xbox profile, you can login to https://Xbox.com. Click on your profile picture and select My account or Microsoft account. You will then be redirected to your Microsoft account page with all your information.

If you still cannot remember which Microsoft account you used for the migration, please let me know.

For 360 content, yes. As stated above, the store on the One/website does not recognize your Microsoft account balance as a valid oayment option for 360 content.

I went a dug up my college email and it is an outlook address. I tried the process again this time choosing 'I know my password, but can't sign in'. I entered the email address and the password, knowing both are valid because I logged into the email account
through the internet earlier. Microsoft produced a screen saying: 'Try entering your Microsoft account again. We don't recognize this one.' Then I Sign in at the bottom of the page and entered my account and password, producing a screen saying: 'That Microsoft
account doesn't exist. Enter a different account.'

So I can enter the account at the WCSU email portal (Microsoft Outlook 365 / Outlook), but the XBOX account does not recognize at initial sign in or through the help utilities offered by XBOX360. Any ideas?

Matt