Go to https://account.microsoft.com
Sign in to the Microsoft account you want to delete
Open Security
Select More security options
Scroll to Close your account
Review the account closure information
Follow the prompts to verify your identity
Select the reason for closing the account
Confirm account closure
Wait 30 or 60 days for permanent deletion, depending on the account settings and region
Sign in again before the waiting period ends if you want to keep the account open