The user authentication failed

Nov 11, 2013 at 10:55 AM

when I try to connect to crm 2011 on-promise : https//

I get the following error. The user I am using is MS CRM administrator.

Any idea?

Thank you.

Failed to connect to CRM.
System.InvalidOperationException: The user authentication failed!
at Microsoft.Xrm.Sdk.Client.ServiceProxy1.AuthenticateCore()
at Microsoft.Xrm.Sdk.Client.ServiceProxy1.Authenticate
at Microsoft.Xrm.Sdk.Client.ServiceProxy1.ValidateAuthentication()