In Outlook for Windows, there is an option to switch on "Try it now" in the upper-right corner. When switched on, it adds a set of icons to the left side of the screen, including one that launches a built-in version of To Do. I am curious to learn whether you have the "Try it now" option switched on. Please feel free to answer as a reply, with as much detail as you choose, or just click one of the poll options. Thanks for anything you'd care to share.