Hi Rick, Thanks for your interest in our app and your valuable input. Though I have not used Forefront Endpoint Protection for scanning Android apks. We have scanned the apks using McAfee, 360+ and Avast and have not seen any virus alerts. The app by itself does not need any permissions for any devices in mobile, since it does not access any. While I did stumble upon KB3036437, it seems 4.7 is having similar issues on all downloads. Could you also let us know the Android Build which you are using, I can take a look at why the apk installer is being blocked. The app is not from Google, hence you need to select the option “Enable Allow installation of apps from sources”. Once installed, you can unselect the option again. [Given in “Instructions”] Again, I can assure you that the app is very simple UI based and does not need any permissions to interact with your device like network, disk and definitely does not contain any code which would perform otherwise. Please feel to reach me at firstname.lastname@example.org Thanks a ton for your interest in our app.