We are unable to modify any registry at the moment. The issue is the keypath does not exist in the gpo editor. The box we are trying from is a DC running server 2016 DataCenter edition, in gpo editor we go to
Computer Configuration > Preferences > Windows Settings > Registry > Right-click on the Registry and select New > Registry Item
Once in here when looking through the hives for the key path under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ there is no option for CDJ. The only C's we have are 'Casting' then next 'CEIP', no CDJ in sight.
Hope this helps