DNN Active Directory Authentication module works first time but doesn't work after that

Question

I am using DNN version 7.4. I successfully installed DNN Active Directory Authentication module 5.0.6. It works first time when I try to login. After the login I can see a new user has been created. Next time, I try to login, I get an error message which is "Critical Error. Please see the event viewer". If I delete the user from "Users > Manage Users", I am able to login. Next time, the problem comes again and I can't login. The event viewer content is given below.

Request information: 
Request URL: http://localhost:84/default.aspx 
Request path: /default.aspx 
User host address: ::1 
User:  
Is authenticated: False 
Authentication Type:  
Thread account name: IIS APPPOOL\ASP.NET v4.0 

Thread information: 
Thread ID: 7 
Thread account name: IIS APPPOOL\ASP.NET v4.0 
Is impersonating: False 
Stack trace:    at 
DotNetNuke.Professional.Authentication.ActiveDirectory.HttpModules.AuthenticationModule.OnAuthenticateRequest(Object s, EventArgs e)
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Any idea how to solve this problem. I tried to download the source file but I can't open it using VS 2012 or 2013.

Basem Basem · Accepted Answer · 2016-01-25T10:29:41

I faced a similar issue. You have to make some changes to the web.config in the membership provider tag as seen in the following lines.

- enablePasswordRetrieval="true"
- passwordFormat="Encrypted"

DNN Active Directory Authentication module works first time but doesn't work after that

1 Answers