When a user tries to install VIP Access Desktop for Windows, it fails with Error 1925.
VIP Access Installer Information
Error 1925. You do not have sufficient privileges to complete this installation for all users of the machine. Log on as an administrator and then retry this installation.
This is caused by the installation of the product by a user without administrator privileges on the system.
Log in with an Administrator account to install VIP Access Desktop or Right Click and choose Run as Administrator from the list.