Jonathon Would I be right in thinking that your TS license server is on a DC (since it's a 2000 license server)? You might want to move it and therefore re-activate the license server, but other than that, it should be fine. If your Citrix servers remain on 2000 server, moving to 2003 AD doesn't change the licensing. A 2003 license server can issue TS CALS to a 2000 server. Hope this helps. Cheers Russell Russell Robertson | Virtual Stream | T:01224 580970 | M:07881 922 745 | Microsoft, Citrix and VMware advisers | From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jonathan Kadoo Sent: 01 April 2008 14:14 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