Good day colleagues on this occasion I am writing for what follows. My INFRASTRUCTURE is this unique forest>> empresa.com with a child domain>> security.empresa.com and forest functional level is Server 2003 and Server main roles is in 2008 is located in a Virtual Machine Server blade that has all the main roles of dominio.Existe one Enterp Exchange 2003 Server SP2 (Installed on a Server 2003 Enterp / SP2). which was migrated from 5.5 because I was not then in the Exchange Server empresa.El works perfectly does not have any kind of problem or anything bien.Les all commented that there is no record of another server in the console of exchange only this one the works, I ran the ADEIT and erase any record of a ghost that existed only server is the server that works The problem is this. * Cuado try to change from Mixed Mode to Native button is not enabled exchange. / I would appreciate any help as far as possible I used the following white paper and still nothing. http://technet.microsoft.com/es-es/library/bb125089 (EXCHG.65). aspx What curis the data and what is not clear to me because when I run the tool I locate the Server RPLMON.y to see the replica excahnge tells me that is not available and when I take the other option to see the Hierarchy of replicates (replicate Show Topology ) Salen all DC line and displays the Exchange connection but shows no connection line and repeat everything works fine and the Server appears in site and services??? that may be it.

Hi, I suggest you refer to following KB to troubleshoot the issue: The Change Mode button is unavailable in the Organization Properties dialog box after you upgrade Exchange Server 5.5 Service Pack 3 to Exchange 2000 Server or to Exchange Server 2003http://support.microsoft.com/kb/260781/en-us ~~~~~~~~~~~~~~~~~~~ Mike Shen TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb @ microsoft.com ~~~~~~~~~~~~~~~~