You are downloading the Duo Mobile AppXBundle file v2016.715.1750.0 for Windows Phone. Duo Mobile is a free and useful Business app: Duo Mobile works with Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Duo Mobile 2016.715.1750.0 AppXBundle file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Duo Mobile AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.