Blast from the past: Pass CLIENTNAME to the Second Hop

Oldie but Goodie

This question comes up again and again: How can we pass the CLIENTNAME variable to a Citrix published application from a Citrix published desktop session (i.e. a double hop)?

When is this needed? Often times, applications that are published on the second hop will cross reference a print queue with the hostname of the endpoint client. These applications my even be a remote hosted  "black box" solution where little to no management visibility is available to those who manage the published desktop.

Although the solution is a fairly common one, there aren't a lot of straightforward references that are easily Google-able, so I thought I should post it here for future reference. 

Solution

On the published desktop where the Citrix Receiver/Workspace App client is installed, apply the following registry value:

[HKEY_LOCAL_MACHINE]\SOFTWARE\WOW6432Node\citrix\ICA Client\PASS THROUGH\

"PASS THROUGH"=dword:00000001