Hi Everyone. I'm really stuck with this so hope someone can help. We have a crashed Server 2003 that I can't get back on line that housed Exchange 2003. We are trying to install Exchange 2010 on a new server but it keeps saying it can't as there is already a server with Exchange 2003 on, which is in mixed mode and doesn't have service pack 2 installed. I can't bring this old server back online. It has already been demoted and removed from the network, all FMSO roles have been seized and I have gone through the article supplied by Microsoft to Forceably remove the Exchange server. I can't see any reference to it or Exchange anywhere in Active Directory, ADSiedit, sites and services and no services are running. All references have been removed from the registry too. Am I missing something? Can someone please help? Thanks in advance. Andy

Hi, The best you can do is to restore your Exchange 2003 Server. Note that it can be done on a different hardware. See this: Recovering a Failed Exchange 2003 Member Server Using the Disaster Recovery Switch http://www.msexchange.org/tutorials/Recovering-Failed-Exchange-2003-Member-Server-Using-Disaster-Recovery-Switch.html I don't understand why you would remove anything from the registry. The server you are trying to install Exchange 2010 on, must be a newly installed one since it's not possible to install EX10 on W2K3.Martina Miskovic

Hello, Is there any update on this thread? Thanks, Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com