We are installing an Exchange 2013 Server in a small environment with an Exchange 2007 server.

When going through the Readiness Checks during the Exchange 2013 Install it fails for the following reason:

"All Exchange 2007 servers in the organization must have Exchange 2007 SP3 or later installed."

This is an issue because on SP3 has been installed on the Exchange 2007 server, but when looking at the version in EMC it shows as (8.1) which corresponds to SP1.

I checked out the following blog post, and it states to check version based on the properties of the EXSetup.exe file.

http://blogs.technet.com/b/exchange/archive/2010/03/08/3409469.aspx

When I did this, I found that the version installed is in fact:

08.03.0342.004

Which corresponds to Exchange 2007 SP3.

While most posts seem to say "It's fine, the server is updated without issue", this is a problem for me because it won't let me install Exchange 2013 in the environment.

Anyone have any ideas to how to resolve the issue with the Exchange 2007 server, or to continue the installation of Exchange 2013.

Thank you,

Hi Gabriel,

You need to have Exchange 2007 SP3 RU11 inorder to bring exchange 2013 in the environment.Only then it will allow you to install Exchange 2013.

I would suggest you to install the latest rollup Exchange 2007 SP3 RU12 and proceed with Exchange 2013 installation

link for Ex2007 Ru11 - http://www.microsoft.com/en-us/download/details.aspx?id=41393

Please mark as helpful if you find my contribution useful or as an answer if it does answer your question.That will encourage me - and others - to take time out to help you.

Regards,

Sathish

website - exchangequery.wordpress.com

Thanks Sathish, 

Unfortunately 08.03.0342.004 is RU12. Therefore it's already installed.