Hello guys,
The sympton is the same as the one in 
"The
server does not support the requested critical extension." Exception.
I got the error in calling IDirectorySearch::GetNextRow. As I observe, the error is trigger when retrieving the another page of records. The LDAP path to connect is "GC://<FQDN_of_GC>". The search filter is (&(|(objectClass=group)(objectClass=msExchDynamicDistributionList))(mailnickname=*)). There are about 100 thousands of group objects in the forest. So the answer in that thread does not help.
Any thoughts?
Thanks.
Msts.cn@Outlook.com