ShareFile for Windows 10 UWP and Windows 8.1 require a ShareFile account. If you need one sign up for a free trial at https://trial.sharefile.com/trial/cq/p1n.aspx?src=windows10.
Citrix ShareFile is a secure file sharing, file transfer, sync and storage solution, enabling you to access and manage your content from anywhere on any device. With ShareFile, you can give the people you work with and your clients full or partial access to the files they need, so you can work collaboratively and securely. The ShareFile Windows app gives you the freedom to conduct business wherever you may be, while our ShareFile for Windows 10 UWP app gives you the freedom to use ShareFile on any Windows device you choose.