Hi!

Maybe someone wrote about this - I saw some posts with the same error stack, but I don't fix it with that tips. So I decide post it here. I've installed fresh DNN 6.2.1, then AD Authentication module. When I try to configure authentication on module page (choose AD server, root domain etc), click "Update@? I see this Error stack: 

Error: is currently unavailable.DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Authentication.ActiveDirectory.ADSI.Utilities.AddADSIPath(String Path, Path ADSIPath) at DotNetNuke.Authentication.ActiveDirectory.ADSI.Utilities.GetRootEntry(Path ADSIPath) at DotNetNuke.Authentication.ActiveDirectory.ADSI.ADSIProvider.GetNetworkStatus() at DotNetNuke.Authentication.ActiveDirectory.AuthenticationController.NetworkStatus() at DotNetNuke.Authentication.ActiveDirectory.Settings.UpdateSettings() --- End of inner exception stack trace ---

Uncommenting Impersonation block in web.config not solve the problem. I tried many variations of settings (e.g. dc=domain, dc=com; LDAP:\\domain.com\ (with this variant erorr is different  - FAIL cant find domain server) nothing worked. I think I entered AD information in the module form with mistakes. so for example for domain.com I enter - 

Root Domain - dc=domain, dc=com

User name - domain.com\user (tried just domain without com - same issue)

Password - pass

email - domain@domain.com

default domain - domain.com

I tested it on domain computer, local IIS Express 7.5 with webmatrix. 

I tried many ASP.NET applications with AD Authentication functionality and pointed out this like settings. Maybe need to add OU="blabla"? Tried - same issue.

Please help. Want to use DNN as intranet information and social portal but very important to use AD.

Thank you very much in advance!

Hello!

Of course I read the documentation.

I use the same login as I login to Windows (it has admin rights on this computer). This line - LDAP://domain.com is exactly as You wrote and error is like: 

Accessing Global Catalog:
FAIL
Checking Root Domain:
FAIL
Accessing LDAP:
FAIL
Find all domains in network:
Could not access LDAP to obtain domains info

I Check out domain shema with LDAPBrowser and ADExplorer from sysinternals - it have read access to the domain. I can browse by OU, Users, Computers with this login. 

Maybe user for impersonation don't need to have admin rights?
Maybe need to specify objects in domain schema like: LDAP://Ip_of_domain_server/OU=department,OU=people,DC=domain,DC=com?

Or maybe ned some special setting for the IIS? In my case it is IIS Express 7.5. Need to try in local IIS with settings described in documentation?

Any ideas. Thanks  for answers