How to disable Printscreen on XA as well as Thin Client

If you would like to disable print screen permanently on XenApp 5.0 /6.0 , this can be done from XA policy as well by creating new registry value as follows:

HKEY_LOCAL_MACHINE -> System -> "CurrentControlSet" -> "Control" -> "KeyboardLayout" create a new binary key called Scancode Map
Value Data will be  :  0000000000000000040000002AE037E0000037E00000540000000000
On linux based thin client WNOS.INI file needs to updated as follows:

1.    xmodmap -e 'keysym Print = anyotherkey'
2.    Comment out the key in /usr/x11r6/lib/x11/xkb/keymap/keycodes

It should be <prsc> = 111 so just put // in front

Following CTX can explain  more about virtual channel

Hope this help