A colleague of mine wrote a design for a customer based on Windows 2008 RDS with a RDS Gateway and RDS Web Access with Windows 7 and XP workstations, when accessing published applications the single sign on worked but when publishing a desktop the single sign on failed. We logged a call at Microsoft Support and after extensive troubleshooting we couldn’t directly solve the problem. Microsoft created a fix for this bug in Windows 8 and back ported it to Windows 7 but our customer wanted to deliver the applications on multiple, managed and unmanaged platforms so we advised them to implement Citrix XenApp with a Citrix Access Gateway so the new requirements and old requirements could be fulfilled.