You are downloading the Norsync Client AppX file v220.127.116.11 for Windows Phone. Norsync Client is a free and useful Productivity app: Basic Norsync data entry and sync client.This app will let you connect to a Norsync server and perform basic data entry and sync ... You can now download the offline AppX file to install & try it.
Download Locations for Norsync Client 18.104.22.168 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Norsync Client AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.