When a user cancels their HBO Max subscription, the account remains active until the end of the current billing cycle. During this period, users can continue to access all the content and features available with their subscription. Once the billing cycle concludes, access to the service will be terminated, and the user will no longer be able to stream content. However, any viewing history or account information will be retained, so if the user decides to reactivate their subscription in the future, they can still find their previous preferences and saved content. It is also important to note that if the user cancels during a free trial, they will lose access immediately upon cancellation. For further details or policy updates, it is advisable to visit the official HBO Max website.