From: Chrétien Versteegh (versteeghcHANSENMAROTZ.NL)
Date: Fri Feb 06 2004 - 08:56:00 CST

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Local Clients run fine without any problem.
The Components, and the client was writtem in Delphi 5.0.
Most developers use XP professional machines, one uses win 2k.
We're familiair with the 'classic' setting in XP and did use it, but without
the required result.

-----Original Message-----
From: Distributed COM-Based Code [mailto:DCOMdiscuss.microsoft.com]On
Behalf Of Slava Gurevich
Sent: 03 February 2004 19:13
To: DCOMdiscuss.microsoft.com
Subject: Re: DCOM Interface not supported on XP.

Does this work if you run the client locally on the "broken" servers? What
language are these components written in, and what OS were they originally
compiled on?

Is the COM+ Application security enabled ( default in XP/2003 as opposed to
win2k), and if so, do you have COM+ roles configured to allow access to the
caller's identity?

Windows XP authenticates non-domain network users as guests ( configurable
via security policy) http://tinyurl.com/r4e7
You may wish to enable auditing of logon events, and check the event log
after testing.

Slava Gurevich

-----Original Message-----
From: Distributed COM-Based Code [mailto:DCOMDISCUSS.MICROSOFT.COM] On
Behalf Of versteeghcHANSENMAROTZ.COM
Sent: Tuesday, February 03, 2004 12:07 PM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: Re: DCOM Interface not supported on XP.

Alright, some adjustments to my previous description and some more details:

The system consists of a COM+ server; Security setting impersonation level
on 'Impersonate';
Identity: This user, where this user is a local admin.
When a client connects the first time, the appserver starts up, reads data
from the database and communicates this to the client.

We have our system working fine at various customers generaly in a Win 2k
environment, and some have XP clients or an XP server .

There are 2 customer sites where we have an 'Interface not supported'
problem.
The Application Server starts up, but on the Client the 'Interface not
supported' is returned directly. Even the reading from the database is not
executed. It seems the Client does have 'launch' rights, but no 'access'
rights, but I would expect an 'Access Denied' in that case.

The 2 customer sites have the following 'exceptional' configurations:
One: Win 2003 Server and XP clients (NT4 client is working fine here!)
Two: Win XP on both Server and Client; both in the same workgroup; in a
Novell Network; the local 'workgroup' user is defined on both machines (with
local admin rights) and on Novell; all with the same username and password.

-----Original Message-----
From: Distributed COM-Based Code [mailto:DCOMdiscuss.microsoft.com]On
Behalf Of discuss.dcomPETERRITCHIE.COM
Sent: 02 February 2004 17:07
To: DCOMdiscuss.microsoft.com
Subject: Re: DCOM Interface not supported on XP.

Chrétien,

Could you post details on what interface is responding with E_NOTIMPL
(0x80004001) when you try and creat it?

We might be able to offer more than what the error is already telling you.

-- Peter

On Sat, 31 Jan 2004 14:26:06 +0100, =?iso-8859-1?Q?Chr=E9tien_Versteegh?=
<versteeghcHANSENMAROTZ.NL> wrote:

>W've build a Multi-Tier application using DCOM. In most environments it
runs
>without any problem.
>However when the client is an XP machine and the Server is Win2k, not
>in a Domain, but in a Workgroup, we get an 'Interface not supported'
>message on the client. The Application Server (DCOM server) is starting
>up, but the client immediatly receives this error message.
>
>We had some 'Access Denied' problems before, but we were able to solve
those
>by the appropriate security settings.
>
>What can be the problem here?

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