Common Issues

Cause

If you previously installed any component of Exchange 5.5 on this server and did not completely uninstall it, the Exchange 5.5 version of the Exchmem.dll file will cause this error message to be displayed.

Solution

Before you run Exchange 2000 Setup, rename the existing Exchange Exchmem.dll to Exchmem.old. Exchange 2000 will then install the appropriate Exchmem.dll file during setup.

Cause

This error occurs when the account you use to start Exchange 2000 Setup does not have the permissions necessary to install Exchange 2000 in the existing Exchange 5.5 site. Exchange 2000 Setup requires service account permissions at the organization, site, and configuration levels for the Exchange Server 5.5 directory when you install it in an existing Exchange 5.5 site.

Solution

Ensure that the Windows 2000 account that you are using to start Exchange 2000 Setup has service account permissions at the organization, site, and configuration levels in the Exchange Server 5.5 directory.

More Information

To ensure that you have the correct permissions to install Exchange 2000 Server in an existing Exchange 5.5 site, install the Microsoft Exchange Server 5.5 Administrator program on the computer on which you are installing Exchange 2000 Server, and then attempt to administer servers in the Exchange 5.5 site by using the Administrator program. If you can start and run the Administrator program on the computer running Exchange Server 5.5, you should be able to install Exchange 2000 when you join the server to the Exchange Server 5.5 site.

Important   Remove the Exchange Server 5.5 Administrator program before running Exchange 2000 Setup.