Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
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Hi Okazaki, Itsuko,
Thank you for explaining the situation.
Since you’re unable to access the account, please contact Microsoft Support for assistance with the subscription and recurring billing. When contacting Support, explain that the Microsoft 365 Personal subscription was purchased using your former school email address and that you can no longer sign in because that address has been deactivated.
Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas.
If you’re able to recover access to the account, you can also manage the subscription through your Microsoft account. If the subscription was purchased through a third party such as Apple, Google Play, Amazon, Best Buy, or another retailer, cancellation would need to be handled through that seller instead.
I hope this helps point you in the right direction and makes it easier to get the subscription and billing status resolved.