To close your Microsoft account, please follow these steps:

Sign in to your Microsoft account at account.microsoft.com.

Click on the "Security" tab at the top of the page.

Scroll down and click on the "More security options" link.

Under the "Account security" section, click on the "Close my account" link.

You will be asked to review the information on the page, including the consequences of closing your account. Make sure you understand everything before proceeding.

If you're sure you want to close your account, click on the "Next" button.

You will be asked to verify your identity by entering a code sent to your email or phone number.

Follow the instructions to confirm that you want to close your account.

Finally, click on the "Mark account for closure" button.

Note that after you close your Microsoft account, your data will be permanently deleted, and you will not be able to access any services associated with the account. Therefore, it’s important to make sure you have backups of any important files or data before proceeding with the account closure.