I had a test Exchange 2007 SP1 server on our domain. When I had finished with it, I deleted the VM it was running on and removed all references to it in AD. Now when I try to install a live version, the install is failing. I'm getting the error:"The well-known object entry B:32:A7D2016C83F003458132789EEB127B84:CN:Exchange Servers\0ADEL:207f1505-1758-4d1e-822e-0b17754e7240,CN=Deleted Objects,DC=mydomainname,DC=co,DC=uk of the otherWellKnownObjects attribute on container object CN=Configuration,DC=mydomainname,DC=co,DC=uk points to an invalid DN or a deleted object. Please remove the entry and rerun the task."The problem is, the usual fix listed for this is: Navigate in ADSI edit to Configuration, CN- Configuration, DC=Mydomain,DC=com CN-Services CN=Microsoft ExchangeAnd when I use ASDI Edit in 2008 R2, there is no "CN=Configuration" entry, so I can't remove the entry.The domain controllers are both running 2008 R2 and were recently upgraded from 2003 Enterprise x64. No other significant changes have been made.Any ideas would be very helpfulThanks!

Launch ADSI Editor Right-click the root node “ADSI Edit”, and select “Connect to” In the “Connection Settings” window, select “Configuration” under the “Select a well known Naming Context” field Click OKJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

hi,you must remove the exhcange server attributes from AD with Adsiedit.and look at here ; how to remove exchange server 2007 from computer ;http://support.microsoft.com/kb/927464regards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com

Proper and non-risky way is to remove properly from Add/Remove Program since manual remove is not supported as like Exchange 2003. How to remove Exchange 2007 from a computer http://support.microsoft.com/kb/927464 -==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==- Exchange 2007 is removed differently from earlier versions of Exchange Server. You cannot manually remove Exchange 2007 from a computer. The only supported ways to remove Exchange 2007 are to use Add or Remove Programs or to use the Setup program on the Exchange 2007 CD to remove Exchange 2007 and to remove the Exchange 2007 object from Active Directory. -==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==- You can recover Exchange 2007 dead server with /RecoverServer setup switch on temporary server and remove it porperly from Add/Remove Program. How to Recover a Lost Exchange Server http://technet.microsoft.com/en-us/library/bb123496.aspx Recovering an Exchange 2007 Server using the RecoverServer switch http://www.msexchange.org/tutorials/Recovering-Exchange-2007-Server-RecoverServer-switch.html However in worst case you can remove the server from ADSIEdit.msc but it may give you problem at long run and you may need to remove stale server entries from various places.. CN=Configuration, DC= Domain_Name ,DC=com, CN=Services, CN=Microsoft Exchange, CN= <Organization_Name>, CN=Administrative Groups, CN= Exchange Administrative Group (AGname), CN=Servers, CN=<Server Name>

Thanks James, that got me to where I could delete more Exchange-related entries.Now I just get an error that the Organization name must be provided and to use the /OrganizationName switch - I can't get any good results from that either.

Hi Mumin,The VM that Exchange was installed on is gone, so I can't perform an uninstall.

hi,so you must clean Exchange attributes with Adsiedit.did you try to delete?regards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com

Yes. Have you removed the exchange traces from AD? What’s the exact error info when you failed the PrepareAD? Is there any error info in the application log on the exchange server? Please also check the output in the installation logJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

As I said previously, I cleaned out everything I could related to Exchange, but still got the error listed in the original post.

James, I posted everything I had available in the original post. I never was able to get Exchange 2007 to install, but Exchange 2010 worked fine right out of the box.

You have installed exchange 2010 RTM in the current domain that you also want to install exchange 2007? James Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

James, I am only running 1 mail server. 2007 would not install, so I used 2010 instead and that worked.