Windows 10 Win + G Pop Up Citrix Receiver Launching Apps/Desktops

Purpose:
To fix the Win + G Popup when launching Citrix apps/desktops from Windows 10 Machines with the latest patches.

Symptom:
When launching published apps or desktops from a Windows 10 OS a green popup windows briefly appears prompting to press Win + G for the game bar or for the search bar.

Resolution:
Open Registry Editor (Run > regedit)
Navigate to HKEY_CURRENT_USER\System\GameConfigStore
Set the value of DWORD "GameDVR_Enabled" to 0
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\
Create key "GameDVR".
Create DWORD 32bit called "AllowGameDVR" and set to 0
Restart your computer.

Cause:
By default Windows 10 has the DVR function enabled. 

SageLike Post ID: SL0015

Applies to:

Windows 10 - Both endpoint devices and VDI's

References:
https://support.steampowered.com/kb_article.php?ref=6239-DZCB-8600#appreg