If you don’t want to be bothered by this message again, then: I do not want to see this Microsoft Store message again On the Apps & Features settings panel, find Choose where to get apps and change the setting to something other than The Microsoft Store only, since this option is the most restrictive.Tap Start, then Settings, then select Apps.If you don’t see an “Install anyway” button, you’ll need to change the default for this Microsoft Store setting (or alternatively, download from the Microsoft store, see below): If you see this message, simply click the “Install anyway” button, and the install should proceed. What to do I have an Install anyway button Our installers are digitally signed using Microsoft’s Authenticode technology, so you know they really are from us.
What does this mean? It simply means the app came from somewhere other than the Microsoft Store.