To cancel your free Microsoft 365 Business Standard trial before billing starts, go to the Microsoft 365 admin center.
Navigate to Billing > Products & services, find your subscription, and select the option to cancel it. Make sure to do this before the trial period ends to avoid any charges.
To cancel your subscription in the Microsoft 365 admin center: https://learn.microsoft.com/en-us/microsoft-365/commerce/subscriptions/cancel-your-subscription?view=o365-worldwide&source=recommendations
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