PRB: BizTalk Server 2002 SP1 Readme.htm Instructions to Register the CDO System Library Return Error 0x800704da

If you follow the instructions in the Microsoft BizTalk Server 2002 SP1 Readme.htm file to register the CDO System Library (Cdosys.dll), you may receive the following error message: The return code 0x800704da is described in the Winerror.h file. This return code translates to "The service is already registered."

This problem occurs because the Cdoex.dll file is already registered on your computer that is running BizTalk Server as the file that provides functionality for the CDOMessage class.

To resolve this problem, follow these steps:

1.	Unregister Cdoex.dll. To do this, type the following command at a command prompt, and then press ENTER: Regsvr32 /u cdoex.dll
2.	Register Cdosys.dll. To do this, type the following command at a command prompt, and then press ENTER: Regsvr32 cdosys.dll
3.	Reregister Cdoex.dll. To do this, type the following command at a command prompt, and then press ENTER: Regsvr32 cdoex.dll

This behavior is by design.

To view the BizTalk Server 2002 Readme.htm file, visit the following Microsoft Web site: