New Account is blocked

Yasemin61 wrote:

I wanted to create a new email address because I changed my lastname.

Wouldn't just a new Alias be easier?

https://support.microsoft.com/en-us/accounts-billing/manage/how-to-add-an-email-address-or-phone-number-to-your-microsoft-account 

Yasemin61 wrote:

the process is being blocked due to alleged unusual activity. ?!

Ongoing problem for many people.

https://support.microsoft.com/en-us/accounts-billing/manage/account-creation-has-been-blocked

If all else fails, get a trusted friend or relative in another location to try and do the create for you. Make sure they put an "Email a code" 2nd verification on the account. You'll need it when you try to logon for the first time from a different location.