XCON: Error Starting the MTA After Upgrading to Exchange 5.5 from Exchange 4.0

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This article was previously published under Q246762

Symptoms

When you upgrade from Exchange Server 4.0 to Exchange Server 5.5, you may receive the following error message:

The procedure entry point EcFloraToLpstr could not be located in the dynamic link library address.dll

Could not start the Microsoft Exchange Message Transfer Agent service on \\<servername>
Error 2186: The service is not responding to the control function.

This error message may be accompanied by the following errors in the System Event Log:

Event ID: 7000
Source: Service Control Manager
Type: Error
Category: None
The Microsoft Exchange Message Transfer Agent service failed to start due to the following error:
The service did not respond to the start or control request in a timely fashion.

Event ID: 7009
Source: Service Control Manager
Type: Error
Category: None
Timeout (120000 milliseconds) waiting for service to connect.

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Cause

The Address.dll file located in the Exchsrvr\Bin folder was not replaced during the upgrade.

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Resolution

To resolve this problem,

Rename the Address.dll file and copy the original Address.dll file from the Server\Setup\I386\Bin folder on the Exchange Server 5.5 CD to the Exchsrvr\Bin folder on the server.
Start the MTA service.

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