Hello Everyone,
I've demoted my 2003 environment (AD and Exchange) and now I'm tring to install a new mail server with Exchange 2013, but during the "Readness Check" an error is being displayed "Microsoft
Exchange Server 2013 Setup can’t continue because it detected that the forest functional level of the current Active Directory forest isn’t Windows Server 2003 native or later. Before you can install Exchange 2013, you must raise the forest functional level
to Windows Server 2003 or later." There is no more Windows 2003 Server on my environment, just Windows 2008, some x86, some x64, others R2, but the two active directory servers are "Windows 2008 x86 SP2 [En-US]". I´ve checked the Forest and
Domain levels and both are now set to "Windows 2008". About the Windows Server which will be installed the Exchange 2013 is an Windows 2008 R2 SP1 [Pt-BR]. All requeriments are checked and it is the only error remaining on the Readness Check.
If anyone get any idea, please let me know.