Cancel microsoft365 without signing in (cant sign in)

Cancelling a Microsoft 365 subscription normally requires signing in with the Microsoft account that purchased the subscription. When sign-in is not possible because account details (email/phone) are no longer accessible, direct self-service cancellation through Microsoft is not available.

In this situation, the practical options are:

1. Work with the payment provider
   • Contact the bank or credit card issuer used for the Microsoft 365 charges.
   • Ask them to stop future recurring payments to Microsoft or dispute/ block the subscription charge.
   • This is specifically recommended when the account cannot be accessed, because Microsoft cannot bypass account security based only on information like name, phone, or card details.
2. Attempt formal account recovery/ownership route
   • If the account owner is unable to access the account, the only Microsoft-side path is to follow the formal ownership/identity process described for accounts in special circumstances (for example, when someone else must act on behalf of the account owner). This is a legal/verification process and can be lengthy and is not guaranteed to succeed.

Because Microsoft support cannot cancel a subscription without validating ownership of the Microsoft account, and ownership cannot be validated without access to that account or successful completion of the formal process, working through the bank/credit card issuer is typically the most effective way to stop further charges.

References:

• How to Cancel Microsoft 365 subscription if you do not have account info? Or get anyone to help? - Microsoft Q&A
• How to get a refund on a Microsoft subscription
• Cancel a Microsoft 365 subscription
• Unable to cancel your Microsoft subscription