When logging off from the Storefront portal a logoff error message is presented:
Logoff Error If any apps are still running, please exit them manually
On StoreFront servers:
1. Open C:\inetpub\wwwroot\Citrix\StoreWeb\web.config in a text editor
2. Change logoffAction="disconnect" to logoffAction="logoff"
3. Save and exit the web.config file
Note: XML Trust Requests May need to be enabled.