You are downloading the Microsoft Build AppX file v184.108.40.206 for Windows Phone. Microsoft Build is a free and useful Business app: Download the Microsoft Build official mobile app. This essential event app allows you to manage your personal agenda, view session details, ... You can now download the offline AppX file to install & try it.
Download Locations for Microsoft Build 220.127.116.11 AppX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Microsoft Build AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.