how do i delete an old microsoft365 or windows account that i no longer use?

To delete an old Microsoft 365 account that you can no longer log into, you will need to follow these steps:

1. Contact your IT administrator: If this is a work account, the best approach is to reach out to your organization's IT support or administrator. They have the necessary permissions to delete the account for you.
2. Use the Microsoft 365 admin center: If you have access to the admin center and are a Global Administrator, you can delete the user account directly. However, since you mentioned you cannot log in, this may not be an option for you.
3. Account Recovery: If you need to regain access to delete the account, try using the account recovery options provided by Microsoft. This may involve answering security questions or receiving a verification code via email or phone.
4. Delete from Windows Settings: If the account is linked to your Windows 11 laptop, you can remove it from your device settings:
   • Go to Settings > Accounts > Access work or school.
   • Select the account you want to remove and click on Disconnect.
5. Delete User Account: If you manage to log in or have someone who can assist you, you can delete the account by following the appropriate steps in the admin center or using PowerShell commands if applicable.

If you are unable to recover the account or need further assistance, consider reaching out to Microsoft support directly for help with account deletion.

References:

• Delete a user from your organization
• Close your Microsoft business account