Short note on Windows Screensaver

Microsoft has changed or extended the screen saver capabilities and in addition Citrix has disabled the screen saver and power functionallity by default for all Windows client operating systems. Therefore, you might find yourself unable to activate the screen saver as you have done before.

Here are two points to get things working 

For Client OS like Windows 7, 8 or Windows 10 used as VDA in a Citrix XenDesktop environment, you must set the following registry value

HKLM\Software\Citrix\Graphics
SetDisplayRequiredMode REG_DWORD = 0x00000000

In some cases, also on Server OS the screensaver might not kick in. If that's the case enable the following Group policy

Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options
Interactive logon: Machine inactivity limit

Note

• Screensaver Not Working in XenDesktop
  https://support.citrix.com/article/CTX205214