Nope. XenApp 5 is the only version that will work on Windows 2008. I will second the notion to why? Why use a brand spanking new version of Windows but a really old, outdate and non-supported version of Metaframe/PS/XenApp? Joe From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jeffery Scherer Sent: Friday, October 03, 2008 10:21 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Windows 2008 & Metaframe XP Is it compatible? Is it possible? Thanks, Jeff