Using Laserfiche 10.3, we have users logged in to their computers using Windows Authentication and then connecting through a browser to a web application that also authenticates them using Windows Authentication.

From there, the web application connects to Laserfiche (server is running on a different machine than the web application). When the web application connects to Laserfiche using a specific name/password, it works without any problem. But, I'm trying to connect with the Windows credentials of the user who's connected to the web application.

My code (C#) looks something like this: 

RepositoryRegistration repositoryRegistration = new RepositoryRegistration (serverName, databaseName);

if (session == null)
    session = new Session();

IIdentity winId = System.Web.HttpContext.Current?.User?.Identity;
if (winId != null)
{
    wi = (WindowsIdentity)winId;

    WindowsImpersonationContext wic = wi.Impersonate();
    if (wic != null)
    {
        try
        {
            session.LogIn(repositoryRegistration);
        }
        catch (Exception e)
        {
            // log an error, etc.
            SessionLogout();
        }
        finally
        {
            if (wic != null)
                wic.Undo();
        }
    }
}

It seems to work if a user is logged on to the same machine as our web application but, otherwise, it fails with an "Access denied. [9013]" error.

Any suggestions?