How to manually remove an Exchange 2000 installation
This article was previously published under Q260378
For a Microsoft Exchange Server 2003 version of this article, see 833396 (http://support.microsoft.com/kb/833396/).
Warning Before you remove a Microsoft Exchange 2000 Server computer from a production environment that has multiple servers in the site, make sure that you know all the roles that are held by the server. Take steps to move those roles to another server before you follow the steps in this article to remove the Exchange server. For example, the server may hold special roles such as site folder server or routing group master, or it could be listed as a bridgehead on a connector such as an SMTP connector or a routing group connector. If you do not transfer these roles to another server before you remove the Exchange server, you may experience adverse effects including the following:
For more information about some of the roles held by an Exchange server and how to move them, click the following article number to view the article in the Microsoft Knowledge Base: 307917 (http://support.microsoft.com/kb/307917/)
How to remove the first Exchange 2000 Server computer from the site
SUMMARY In some situations, you may need to remove Exchange 2000 from a server. The best way to do this is to re-run Setup, and at the Component Selection screen click the Remove option for the installed components. If this does not work, it may be because there are still mailbox-enabled users. To disconnect this server's mailboxes from their associated users, use the Active Directory User and Computers snap-in to select all users with mailboxes on this server, right-click and select Exchange Tasks, and then click Delete Mailbox. If you are still not able to uninstall using the Setup program, you can uninstall Exchange 2000 manually, as described in the "More Information" section. MORE INFORMATIONImportant This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 (http://support.microsoft.com/kb/322756/) How to back up and restore the registry in Windows To remove Exchange 2000 completely from a system, it is important to understand other components (apart from the Exchange 2000 services) that are affected by the installation of Exchange 2000. Exchange 2000 depends on the Active Directory services that Microsoft Windows 2000 provides. In addition, protocol support is obtained by extending the capabilities and functionality of the Microsoft Internet Information Services (IIS).The following is a list of the Exchange 2000 services (and their corresponding registry locations) that are installed during a typical Exchange 2000 installation.
Microsoft Exchange Directory Service to Metabase Microsoft Exchange Event Microsoft Exchange IMAP4 Microsoft Exchange Information Store Microsoft Exchange Management Microsoft Exchange Message Transfer Agent Stacks Microsoft Exchange POP3 Microsoft Exchange Routing Engine Microsoft Exchange Site Replication Service Microsoft Exchange System Attendant There are additional modifications and additions made in the registry during a typical installation. These entries will need to be removed also.
Warning If you use the Active Directory Sites and Services console, the Active Directory Services Interface Edit snap-in, the Lightweight Directory Protocol utility, or any other Lightweight Directory Access Protocol (LDAP) version 3 client and incorrectly modify the attributes of Active Directory objects, you can cause serious issues that may require you to reinstall Microsoft Windows 2000 Server and/or Microsoft Exchange 2000 Server throughout your entire organization. Microsoft cannot guarantee that the issues that result from the incorrect modification of Active Directory object attributes can be solved. Modify these attributes at your own risk. If you are unable to install or run Exchange System Manager, you may also manually remove enough of the server attributes to allow a successful reinstallation attempt by using the following method. This method does not perform cleanups of references to the server object outside the server's own container. Use of this method is discouraged unless you intend to immediately reinstall the server into the same administrative group, because it may require manually removing or editing many attributes on objects throughout Active Directory. Note You can remove the entire Microsoft Exchange 2000 organization from Active Directory by deleting the Microsoft Exchange object. When you delete this object, you may be forced to reinstall all Microsoft Exchange servers in your enterprise. If you intend to remove Exchange entirely from your enterprise, you should also open the Active Directory Users and Computers management console, and remove the Microsoft Exchange System Objects container. For more information about how this can be done using Active Directory Sites and Services, click the following article number to view the article in the Microsoft Knowledge Base: 279749 (http://support.microsoft.com/kb/279749/)
ForestPrep does not work with error message: An invalid ADSI pathname was passed 80005000
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
273478 (http://support.microsoft.com/kb/273478/)
How to completely remove Exchange 2000 or Exchange 2003 from Active Directory
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