Know EndPoint OS Family with in XenDesktop

Registry Key Holding the Data

[HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Ica\Session\1\Connection]
“ClientProductId”=dword:000080e1

Corresponding Values

Powershell Snippet

$icaSessionRegPath = "HKLM:\SOFTWARE\Citrix\Ica\Session\1\Connection"
$(Get-ItemProperty -Path $icaSessionRegPath).ClientProductId

Output: 32993

which is ThinOS from the above table and its indeed a zeroclient (Xenith).

Tip

Combination with SessionStateMonitor http://support.citrix.com/article/CTX127491 brings lot of use cases.