Users can expect a degraded experience of the Outlook for iOS app over time if they do not stay up to date.
While older versions of Outlook already installed will still work on devices running older iOS versions, these devices will not get new app updates. NOTE: Devices with iOS 12 and older are no longer supported and the Outlook app is not available to download. Note: If you have Two-Step Login with Duo Security, you will be prompted to complete login using Duo.
