You can use this process instead:
- Perform the certificate renewal on the Go Daddy web site and select the option to reuse the existing CSR. If you do this then you do not need the renewal request from Exchange.
- Download the approved certificate in zip format and extact it to obtain the .crt file.
- Use IIS Manager (at the server node) to complete a certificate request. Provide the .crt file and a friendly name that you recognize. Note that .crt files are not displayed by default when browsing for the file.
- Use the Exchange Management Console to assign services to your renewed certificate.