LDAP: Unknown error (0x8000500c) on server, locally working

I have this class LDAP which gets users from AD. It works locally, but when I deploy on a remote server I get Unknown error (0x8000500c). As from stack trace on remote machine I presume that error is thrown while invoking GetUsers() library method:

[COMException (0x8000500c): Unknown error (0x8000500c)]
Library.LDAP..ctor(String login) in C:\Users\xxx\Documents\Visual Studio 2010\Projects\XXXLib\XXXLibrary\LDAP.cs:75
XXXLibrary.LDAP.<GetUsers>b__0(String login) in C:\Users\adkozak\Documents\Visual Studio 2010\Projects\XXXLib\XXXLibrary\LDAP.cs:148
System.Linq.WhereSelectListIterator`2.MoveNext() +110
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +327
System.Linq.Enumerable.ToList(IEnumerable`1 source) +58
XXXLibrary.LDAP.GetUsers(List`1 logins) in C:\Users\xxx\Documents\Visual Studio 2010\Projects\XXXLib\XXXLibrary\LDAP.cs:148

Authentication on Remote IIS is set to:

Windows Authentication: Enabled

ASP.NET Impersonation: Enabled

Rest of types are disabled.

Every clue, help would be appreciated. I have no idea what I could do wrong.

Ah, I've finally found what was wrong - Error 0x8000500c means Active Directory Datatype Cannot be Converted to/from a Native DS Datatype I've looked into LDAP entry using BeaverTail ADSI Browser and noticed that one of properties is not string but array. Hope that this helps anyone!