You are downloading the Disqus Blog APPX file v1.1.0.0 for Windows Phone. Disqus Blog is a free Social App: Keep up with Disqus company and community news with the Disqus company blog reader. This is meant to serve as an example of how to use the Disqus. You can now download the offline APPX package file to install & try it.
Download Locations for Disqus Blog 1.1.0.0 APPX file
Package File
Please Click Here > to retrieve available package files for Disqus Blog.
Please be aware that the Disqus Blog APPX file you are to download is hosted on the Microsoft Store CDN server. You can read more about Disqus Blog 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 Disqus Blog APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.