Why does the play store show "deactivate" instead of uninstall I was reviewing the recent update changes for the Outlook app when I noticed that instead of the normal uninstall button, it says dectivate instead:


Screenshot showing the button (click to enlarge)

I don't believe that this is a core app as its a Samsung phone (specifically the Core LTE). 

Why is the play store showing deactivate instead of uninstall?
This is probably because you have configured Outlook as a Device Administrator. This prevents you from uninstalling the app. If you wish to uninstall Outlook you will need to go to Settings > Security > Device Administrators and uncheck Outlook. This will then allow you to uninstall the app.

Steps taken from Nexus 5 so may differ slightly on other devices