Active Directory on Install

[pgaliardo]

Ok, I thought I had all my bases covered. I upgraded the only Global Catalog server in our organization to Windows 2003 R2, ran forestprep, adprep, etc. From what I read you only need one GC in an organization to be running Windows 2003. This server (DC1) holds all FSMO roles.

While trying to install Exchange 2007 on a new machine it keeps coming back with the following message:
Setup encountered a problem while validating the state of Active directory: Domain Controller 'dc2.corp.<domain_name>.com' Operating system version is 5.0 Service Pack 4. The minimum required version requred is 5.2 Service Pack 1.

DC2 is a domain controller running Windows 2000, but not a GC. Does this mean I have to upgrade all Domain Controllers to Windows 2003? This is not how the System Requirements describe it. Thanks for any input.

 

[Zelandakh]

Confirm all FSMOs are on DC1 and that DC2 is not a GC.

 

[pgaliardo]

Thanks for the reply. All FSMO roles are on DC1 and DC2 is not a GC. The solution I found through some research was to do the install through the CLI and run setup with the /dc switch and force it to look to DC1. That looks like it worked.