citrix receiver xenapp opens windows login screen server 2012

I have found this information records in CDF trace in time of manually entering password. I have tried analyze this behaviour throught Scout/CIS, but everything is OK. Connectivity to the domain, time synchronization, AD computer account - everything seems ok. There are only standard software without modifing gina/windows logon. How can we prevent the second login prompt on Windows 2012 server? On „“Windows 2012 Servers” we disabled password prompt settings via group policy (gpedit-> Computer Configuration/Administrative Templates/Windows Components/Remote Desktop Services/Remote Desktop Session Host/Security ->Always prompt for password upon connection), but without effect. When we try this only via StoreFront server/portal with method “User name and password”, we haven’t problem to start apps/desktops from “Windows 2008 Servers”, but apps/desktops from “Windows 2012 Servers” still need to enter password to login windows prompt. In this case when we log on to Netscaller, we can see published apps/desktops, then we can start them without problem from “Windows 2008 Servers”, but when we start some apps/desktop from “Windows 2012 Servers”, we got the windows login prompt with pre-populated domain/username and we have to enter password to complete login process.

On StoreFront servers we have authentication method “Pass-through from Netscaler Gateway”.

We have this XA environment: Netscaller Gateway (with ICA only), StoreFront Servers, one Citrix Farm XenApp 6.5 (on Windows 2008 Server platform), second Citrix Farm XenApp 7.14.1 (on Windows 2012 Server platform) and PVS Farm (streaming for all XA servers).

Citrix receiver xenapp opens windows login screen server 2012