Hello, I’m Virginia a fellow Windows user.
I suspect your account has been hacked & the email address changed to that of the hacker & the original email deleted.
Please note we’re not Microsoft but fellow users like yourself & have no access to accounts.
Hacked:
Or:
Can’t sign in:
You can try also https://support.microsoft.com/home/contact & choose Account Recovery.
If none of the above work then you’ll require the account recovery form:
Please note if you have 2/multi factor authentication active on your account then you cannot use the form to recover the account.
If you’re successful in changing the details then you may find that the account is limited for 30 days, this is a security feature & cannot be circumvented.
Please be aware that as the email address has been changed to that of the hacker &/or 2fa/mfa has been enabled then usually there’s nothing which can be done. You would need to create a new account & request that Microsoft transfer any purchases & subscriptions to the new account.
To request a transfer of purchases & subscriptions contact Microsoft here: