The debit card must be removed either from the Microsoft account payment options or from the specific subscription’s billing profile, and future charges can also be blocked at the bank/card level.
To remove the card from a personal Microsoft account that the ex‑wife is using:
- Go to the Microsoft Payment options page and sign in with that Microsoft account.
- Locate the debit card under payment methods.
- Select Remove and confirm removal.
If the card is tied to an Azure or Microsoft 365 subscription and cannot be removed because it is the active payment method:
- Add a different valid payment method to that subscription or billing profile.
- Set the new method as the default.
- Then remove the old debit card. If the portal still won’t allow removal, check for any outstanding balance and clear it first.
- As a last resort, cancel the subscription; once canceled and any balance is paid, the card can be removed.
If access to the ex‑wife’s Microsoft account is not available, the practical option is to contact the bank or card issuer and:
- Request the card be replaced or blocked for further Microsoft recurring charges.
- Dispute any unauthorized transactions according to the bank’s process.
For recurring Microsoft 365 charges where account access is impossible (for example, no credentials or recovery info), canceling at the bank/card level is explicitly recommended as the realistic route.
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