You are downloading the Admin Tools XAP file v220.127.116.11 for Windows Phone. Admin Tools is a free and useful Productivity app: Admin Tools is set of networking tools to help you with networking tasks which are not available on Windows Phone. Currently implemented ... You can now download the offline XAP file to install & try it.
Download Locations for Admin Tools 18.104.22.168 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP 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 Admin Tools XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.