Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
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Sign in with your Microsoft account on the Order History page to check whether any orders have been placed. This will help confirm whether you have any active subscriptions.
https://account.microsoft.com/billing/orders
If you don’t see any recent orders in your Microsoft account, sign in with each of your Microsoft accounts on the Order History page to check which account is being charged.
If you’re able to identify the account and the reason for the charges, you can cancel the subscription from that account.
If you still cannot find why you are being charged, see
How to investigate a billing charge from Microsoft