Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
The Classic option started on January 16, 2025. The relevant Microsoft document says “Downgrade to Microsoft 365 Personal or Microsoft 365 Family Classic: Go to Subscriptions . Sign in with the Microsoft account associated with your subscription, if prompted. Find your current subscription and select Manage > Cancel subscription. To downgrade to another plan with fewer features, select Microsoft 365 Personal Classic or Microsoft 365 Family Classic, or another plan that works for you. Follow the instructions to complete the switch.” (see here). However, when you follow the above instructions, there is no option to downgrade to Classic, only to Basic, which has much fewer options.