You are downloading the Viva Messenger AppXBundle file v2016.1012.1252.0 for Windows Phone. Viva Messenger is a free Social App: VIVA business community by. You can now download the offline AppXBundle package file to install & try it.
Download Locations for Viva Messenger 2016.1012.1252.0 AppXBundle file
Package File
Please Click Here > to retrieve available package files for Viva Messenger.
Please be aware that the Viva Messenger AppXBundle file you are to download is hosted on the Microsoft Store CDN server. You can read more about Viva Messenger or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Viva Messenger AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.