Using Classic Outlook on Windows for personal email, calendar, and contact management
In MS Outlook, click on File > Options. Once the Outlook Options screen comes up, click Tasks on the left hand side, under Task Options, I had to uncheck "Open tasks in the To Do app". After unchecking it, click "Ok" to close out the Outlook Options screen. Once I did the other I mentiond, now my task have gone back to opening up in the old Task View instead of opening up in the "To Do" App.