A user has to change the password within session to Citrix XenDesktop 7.x or Virtual Desktop server and receives an error message during the process: Warning: Could not connect to the Citrix server.
Problem
The password change option is disabled on XenDesktop 7.x server (server default setting!).
Solution
Enable password change option on your Citrix server:
Go to Citrix StoreFront MMC
Open page Authentication
Set Authentication Method = User name and password
Click Manage Password Options (right panel)
Enable an option allowing the password change (Any time or When expired)