dear all
I'm planning an exchange 2007 installation in my organization.
Unfortunately actually we have an exchange 2003 on DC and we want to install
exchange 2007 on a different machine and plan a coexistence with Exchange
2003 and Exchange 2007 for some time.
When I'm running
setup.com /PrepareAD
on my DC (unfortunately with exchange 2003) there is an error:
"A previous version of Exchange Server is already installed on this
computer. Run Exchange 2007 Setup from a different computer or remove the
previous version of Exchange Server."
how can i proceed?
thank you for your help

Re: PrepareAD on DC running exchange 2003 by Rick

Rick
Thu Jul 17 10:04:41 CDT 2008

Run this on the server you are installing the Exchange 2007 on. It does not
have to run on the DC. It has to be able to contact the DC but it does not
have to run on the DC.

"Daniele Moretti SP" <DanieleMorettiSP@discussions.microsoft.com> wrote in
message news:EE799FC2-BF1B-499B-BA63-3D15B42AAEC1@microsoft.com...
> dear all
> I'm planning an exchange 2007 installation in my organization.
> Unfortunately actually we have an exchange 2003 on DC and we want to
> install
> exchange 2007 on a different machine and plan a coexistence with Exchange
> 2003 and Exchange 2007 for some time.
> When I'm running
> setup.com /PrepareAD
> on my DC (unfortunately with exchange 2003) there is an error:
> "A previous version of Exchange Server is already installed on this
> computer. Run Exchange 2007 Setup from a different computer or remove the
> previous version of Exchange Server."
> how can i proceed?
> thank you for your help