Question

I am using code block below to get LDAP username (I am giving only first line)

using (PrincipalContext context = new PrincipalContext(ContextType.Domain))
{

}

It gives me an error once I publish the asp.net MVC app to server.

ArgumentException: The (&(objectCategory=user)(objectClass=user)(|(userPrincipalName=)(distinguishedName=)(name=))) search filter is invalid.]

Answer 1

Try to pass the domain parameter like this.

using(PrincipalContext pc = new PrincipalContext(ContextType.Domain, domain)) {
        // validate the credentials 
        result = pc.ValidateCredentials(username, password);
}