“A referral was returned from the server” exception when accessing AD from C#

Question

DirectoryEntry oDE = new DirectoryEntry(\"LDAP://DC=Test1,DC=Test2,DC=gov,DC=lk\");

using (DirectorySearcher ds = new DirectorySearcher(oDE))
{
    ds.PropertiesToL         


        

Answer 1

In my case I was seeing referrals when I was accessing AD via SSO with an account in a trusted domain. The problem went away when I connected with explicit credentials in the local domain.

i.e. I replaced

DirectoryEntry de = new DirectoryEntry("blah.com");

with

DirectoryEntry de = new DirectoryEntry("blah.com", "someguy@blah.com", "supersecret");

and the problem went away.