MonitorWare Knowledge Base

I have been trying so hard so for one week to enable my LDAPS on my Windows 2003 server. I have followed the instruction given on Microsoft website:

http://support.microsoft.com/kb/321051

but still, when i run the LDP.exe, i received this error:

ld=ldap open ["172.18.200.4",636];
Error <0x0>: Fail to connect to "172.18.200.4"

Can connect using port 389 with no problem

Can someone help what should I do?