Ensure that you have enabled SSL in Directory Server. To export the Directory Server certificate to a temporary file so that you can import it into the certificate database of the Directory Server Connector, issue the following command:
<ISW-server-root>\shared\bin\certutil.exe -L -d . -P slapd-hostname- -n server-cert -a \ > C:\s-cert.txt
ISW-server-root is the path where ISW-hostname directory is present.