Hi, I was able to uninstall exchange 2007 using command line. However, I have a problem re-installing it. Firstly I ran the setup file on the CD and it went as far as readiness check, everything else passed except organization pre-requisite - detailing that i have to run 'setup /preparead' first. When I run the setup /preparead command it comes with some well-known object error message as posted below: "D:\CMPNENTS\Exchange12>setup /preparead Welcome to Microsoft Exchange Server 2007 Unattended Setup Preparing Exchange Setup No server roles will be installed Performing Microsoft Exchange Server Prerequisite Check Organization Checks ......................... COMPLETED Configuring Microsoft Exchange Server Organization Preparation ......................... FAILED The well-known object entry B:32:A7D2016C83F003458132789EEB127B84:CN=Exchan ge Servers\0ADEL:86a00cd3-c035-4e8d-8a5d-b85e0aa11753,CN=Deleted Objects,DC=hcc, DC=local of the otherWellKnownObjects attribute on container object CN=Configura tion,DC=hcc,DC=local points to an invalid DN or a deleted object. Please remove the entry and rerun the task. The Exchange Server Setup operation did not complete. For more information, visi t http://support.microsoft.com and enter the Error ID. Exchange Server setup encountered an error.' Anyone got a fix for this? Cheers

Hi mate, you dont need to update the schema every time you want to install exchange

Oh ok. so how do you install exchange 2007 on server 2008 without getting all this errors? Cheers

Hi, Try to see this thread it may help: http://social.technet.microsoft.com/forums/en-US/exchangesvrdeploy/thread/e6a91d52-aaf9-4c01-aea9-75813fe0bb77/ Best regardsBest Regards Don't forget to mark it as answer if it helps

Thanks, great link. I just got stuck modifying the "other well-known object" attributes as i'm using server 2008. Any idea?? Cheers

have you used adsiedit to modify the entry? You must be an administrator if you want to modify this entry. Other question: what windows server 2008 are you using? specify the service pack! you are using exchange 2007, with what service pack? Good luckBest Regards Don't forget to mark it as answer if it helps

Thanks, Yes I logged in as an administrator Windows Server Standard FE SP2 Exchange 2007 SP1 Cheers

Have you use ADSEDIT? ThanksBest Regards Don't forget to mark it as answer if it helps

Hi, First, you need to ensure that you login as a member of schema admins. Besides, you can try to the following steps: Open adsiedit->expand configuration->right click on CN=configuration, DC=(domain),DC=com->clicking properties->select the otherWellKnownObjects attribute->click edit->click add button (essentially adding nothing)->click OK Hope this helps. ThanksSophia Xu

Any update on the issue? I would recommend you to install Exchange 2007 SP3.Gulab | MCITP: Exchange 2010-2007 | Skype: Gulab.Mallah | Blog: www.ExchangeRanger.Blogspot.com

Run Ldp.exe and select the Microsoft Exchange container in the Active Directory Configuration partition. From the Ldp results pane, copy each Exchange security group reference, for example: B:32:9C5B963F67F14A4B936CB8EFB19C4784:CN=ExchangeLegacyInterop\0ADEL:b96fa30e-4fb4-4dae-8e33-feb82dfa3950,CN=Deleted Objects,DC=northwindtraders,DC=co,DC=uk To delete the references to the deleted groups from the otherWellknownObjects attribute, do the following: Run Ldp.exe, expand Configuration, expand Services, and then double-click Microsoft Exchange. Right-click Microsoft Exchange and select Modify. Type otherWellknownObjects in the Edit Entry Attribute text box. Select the Delete option button. In the Ldp.exe results pane, find otherWellknownObjects. For each entry, do the following: Copy the entry, paste the entry into the Values text box of the Modify dialog box, and then press ENTER. Make sure that you do not leave the Values field and Entry List blank, because this will delete all entries in the otherWellKnownObjects attribute, potentially including values that you did not want to delete. Finally, to execute the command, click Run. After deleting the Exchange security group references, rerun Setup /p to create groups and populate membership. This will only create the basic groups and membership. It will still be necessary to update the Exchange security groups with membership specific to your environment. Of particular importance is the ExchangeLegacyInterop group, which must be populated with routing group connector bridgehead servers that link to Exchange 2007. refer http://technet.microsoft.com/en-us/library/bb288907(v=exchg.80).aspx Thanks Joseph Pradeep

Hi, Any update on the issue?Gulab | MCITP: Exchange 2010-2007 | Skype: Gulab.Mallah | Blog: www.ExchangeRanger.Blogspot.com