You are downloading the My Server XAP file v188.8.131.52 for Windows Phone. My Server is a free and useful Productivity app: My Server for Windows Phone is an application designed to help you keep seamlessly connected to your server resources through Windows smart phones. ... You can now download the offline XAP file to install & try it.
Download Locations for My Server 184.108.40.206 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline My Server XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.