No, You can have a 2003 Server which acts as a license server for 2000/2003 TS cals. Mike _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jonathan Kadoo Sent: Tuesday, April 01, 2008 8:14 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Windows 2000 and Windows 2003 I am just worried about the TS licensing. Any issues with that in a W2k3 domain? Jonathan On Tue, Apr 1, 2008 at 12:59 AM, Rick Mack <ulrich.mack@xxxxxxxxx> wrote: Hi Jonathan, Shouldn't be a problem provided Win2K is patched to a reasonable level. regards, Rick -- Ulrich Mack Quest Software Provision Networks Division On 4/1/08, Jonathan Kadoo <jkadoo@xxxxxxxxx> wrote: Good morning everyone, I have a client that is in a bit of a pickle. They are currently running Windows 2000 AD and 5 - Windows 2000 Citrix servers running Metaframe 1.8a. They know they need to upgrade their infrastructure. The question is can we upgrade the active directory domain to 2003 r2 and still maintain the citrix servers as they are? Somehow I don't think we can do this. Any thoughts or ideas would be greatly appreciated. Jonathan