http://blogs.msdn.com/rds/archive/2009/03/06/migrating-a-windows-server-2003 -license-server.aspx You can migrate the service from one to another - but as soon as you move from 2003 to 2008 on your TS/RDS boxes you'll need new licenses. From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Angela Smith Sent: 11 May 2010 23:19 To: thin@xxxxxxxxxxxxx Subject: [THIN] Terminal Services license server Hi I need to replace an existing Windows 2003 Terminal Services License Server. Our Citrix farm is all running on Windows 2003 servers. I will be upgrading the farm to Windows 2008 at some point. Can I build a Windows 2008 TS License server that manages both Windows 2008 and Windows 2003 servers???? Our servers are licensed per user. Does anyone have any best practice doco on building TS license servers? Thanks Ang _____ Find it on Domain.com.au Need a new place to live? <http://clk.atdmt.com/NMN/go/157631292/direct/01/>