Hello, I’m Virginia a fellow Windows user.
Can you sign in to the account online? If not then the account may have been hacked, If you can then is there any error message/code during account setup?
Has your account been locked?
Locked account:
https://support.microsoft.com/account-billing/account-has-been-locked-805e8b0d-4141-29b2-7b65-df6ff6c9ce27
If not but cannot sign in:
Can’t sign in:
https://support.microsoft.com/account-billing/you-can-t-sign-in-to-your-microsoft-account-475c9b5c-8c25-49f1-9c2d-c64b7072e735
If cannot sign in & the error says username or password is incorrect or that the account doesn’t exist then it has been hacked:
Try recovering your account here:
Hacked:
https://support.microsoft.com/account-billing/how-to-recover-a-hacked-or-compromised-microsoft-account-24ca907d-bcdf-a44b-4656-47f0cd89c245
You can try also https://support.microsoft.com/home/contact & type Account Recovery in the box, then choose the Contact Support tab above & select Windows, then recovery from the drop down menus.
If none of the above work then you’ll require the account recovery form:
https://account.live.com/acsr
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 if 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:
https://support.microsoft.com//help/4051701/
https://support.microsoft.com/contactUs