Hi, i was wondering if anyone could help.

Visual Studio 2005, C#.Net, WIndows XP Pro, IIS5.1, Communicator 2005

I have written a simple web app that displays status of people from LCS using the communicatorAPI library. When this is run on my laptop in the development server mode (pressing F5) everythings works ok, but when the web app is published to my laptop for others to test, the app fails and it is failing where i create the communicatorAPI object in the code.

A reference has been added to the Microsoft Office Communicator API.

Code Snippet

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using CommunicatorAPI;

namespace XXX
{
    public partial class API_Test : System.Web.UI.Page
    {
        private CommunicatorAPI.MessengerClass cMC = null;
       
        protected void Page_Load(object sender, EventArgs e)
        {
            cMC = new CommunicatorAPI.MessengerClass();
        }
    }
}

Debug page returned

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: Creating an instance of the COM component with CLSID {8885370D-B33E-44B7-875D-28E403CF9270} from the IClassFactory failed due to the following error: 80010105.

I was wondering if this is a security issue with the user IIS is using or the way i create the object. DOes anyone have any suggestions that i might try to resolve this issue.

Rgds Steve

I'd definetly suspect some issues around the process account. When under IIS it might be that Network Service doesn't have the permissions to create the object - a good test would be to use impersonation <identity impersonate="true"> during the request, or change the identity of the whole web worker process to run under your account temporarily and see if things work.

Cheers for the idea Scott, i created a new account on my machile with admin rights, modified the web.config file as discribed and in the ASP.Net tab on the web properties, changed the Identity setting on the application tab to my admin user.

Now the web page progresses further but now fails on the class gemeration line on the web code

cMC = new CommunicatorAPI.MessengerClass();

with the same error.

It looks like we are on the right track. I will try it on a W2K3 server to try a different version of IIS  

Rgds

Steve

Another tool to investigate might be DCOMCNFG: http://msdn2.microsoft.com/en-us/library/ms690141.aspx

It's been awhile since I fiddled with the tool, but I've used it in the past to allow ASP to use some COM components on the server.