I suggest that you do not force the user to update application. If the user does not need new features, let him use the old version.
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We currently only support the latest version of the app. This means that it is not possible to go back to older versions of the app at the moment.
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The Outlook Mobile Team
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Vinzent LeoAnthony Cooper III commented
app is the worst **** getting out of microsoft offices since win8.
give us back access to the old app.
you guys screwed up a perfectly good working app.
So many people are complaining that they are being forced to upgrade on your android store and not being listened to, I suggest you don't force people to upgrade by denying them access to a service that actually works better than your so called upgraded version