Problem in Upgrade Exchange 2007 to 2010

Hi everybody
I want to upgrade my exchange server from 2007 to 2010 but I received following error when I want to install Hub and Cas role in the new fresh server 2008 .
the version of  current Exchnage server in all role servers is : 08.03.0213.000 but I encountered with this error again !
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AmitIT ArchitectCommented:
Try Recommended action showed in the result
post the recommended action, please.
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Madan SharmaConsultantCommented:
do you have any server with exchange 2007 (SP1) or any older version if yes then please upgrade(or demote whatever you can do)  the same and try again.
MapnaturbineAuthor Commented:
I don't have any Exchange server older than SP3 (08.03.0213.000) and recommended action is :

Exchange Server 2010 Beta Coexistence Not Supported

 [This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]
Topic Last Modified: 2008-11-13
Exchange Server 2010 setup cannot continue because previous versions of Exchange exist in the same Active Directory site.

Coexistence between Exchange 2010 Beta and previous versions of Exchange is not supported.

To address this error, install Exchange 2010 Beta into an Active Directory site that has no earlier versions of Exchange in it.
Hendrik WieseInformation Security ManagerCommented:
Try downloading and installing Update Rollup 5 for Exchange Server 2007 Service Pack 3 (KB2602324)

Hope this helps.
Are you absolutely sure all your exchange 2007 servers are sp3? Have you ever had any failed servers that have been manually removed but might have legacy attributes stored in AD? Are all your exchange 2006 correctly licensed?

In exchange powershell run

Get-exchangeserver | select name, admindisplayname

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MapnaturbineAuthor Commented:
one of my servers was in SP1 after upgrade it coexistence error has been solved but at now I need to 6 hotfix to continue the setup , anybody knows where can I find them ?
I find only KB973136 and at now I need to following hotfix :

KB 982867
MapnaturbineAuthor Commented:
you are right , one of my exchange servers (unified messaging) was turn off and it was in SP1 , it should turn on and upgrade to SP2 or SP3 before running the Exchange 2010 setup .
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