Wednesday, 8 May 2013

Storefront / Web Interface with CPS 4.0

If you ever try adding a legacy Citrix Presentation Server 4.0 farm to a Web Interface and the apps don’t launch, check the application event log on your Web Interface servers for Error 40001 messages like below:

Launch references are only support with Presentation Server 4.5 and above. To fix this:
If using Web Interface:
Go to your WebInterface.conf on your Web Interface servers:
and change RequireLaunchReference and OverrideIcaClientname to Off and On respectively:
If using Storefront:
Change the same settings in the web.config of the Storefront site.


  1. Where exactly do you place this setting in the web.config of the storefront site?

    1. Sorry for the huge delay in response... Don't know how I missed your comment. In case you haven't resolved this yet, the setting is in the web.config of the Store folder (NOT the StoreWeb!)
      Default would be: \inetpub\wwwroot\Citrix\Store\web.config
      Do a search in the config file for requireLaunchReference and set it from on to off.