I have just moved from windows phone Nokia 920 to a HTC 530 Android mainly because the 920 can't be upgraded to W10 and a lot of apps now are not available in windows. I have a hotmail account that is now Outlook so downloaded the Outlook app signed in but couldn't sign out that meant if anybody picked up my phone and selected the app they would be straight into my mail, didn't like that so remove it was the answer. But not as easy as removing windows apps hold finger on app and select from list, gone. Followed MS instructions and canceled tick in box but when selecting app a uninstall drops down from the top of the screen but when you withdraw your finger it leaps back in again so it becomes a two finger job which i think is quite appropriate for this app. Could MS please build in a sign out feature into this app.