Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
To close your Microsoft account, you must be able to sign in to it using the following link:
https://go.microsoft.com/fwlink/?linkid=2272280
You can find more information about the account closure process here:
https://support.microsoft.com/accounts-billing/manage/how-to-close-your-microsoft-account
Before closing the account, I recommend confirming which Microsoft account has the active subscription. Please sign in with each account you may have used and check the Services & subscriptions page: