You are downloading the KnowWhatToSend XAP file v1.0.0.0 for Windows Phone. KnowWhatToSend is a paid Social App: have you ever noticed that the smiles in WP keyboard are different ? you send a smile and it show up in your friends phone a different smile ? this. You can now download the offline XAP package file to install & try it.
Download Locations for KnowWhatToSend 1.0.0.0 XAP file
Package File
Please Click Here > to retrieve available package files for KnowWhatToSend.
Please be aware that the KnowWhatToSend XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about KnowWhatToSend 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 KnowWhatToSend XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.