I'd try two things:

1) use RPC__C_IMP_LEVEL_IDENTIFY
2) give the service access to the desktop.

The way clients in winsta0 interact with services was pretty much busted in
Win2k, so I'm not surprised you find differences. But I'm currently too far
away from good old DCOM to give you something more concrete than this.
Sorry.

-- Henkk

----- Original Message -----
From: "Shweta Shintre" <shwetshriYAHOO.COM>
To: <DCOMDISCUSS.MICROSOFT.COM>
Sent: Thursday, December 05, 2002 5:44 AM
Subject: DCOM on .Net

> Hi,
>
> I have written a service through which I register my component as. The
registration is done using CoRegisterClassObject(). This API returns with
success.
> Then I try to get an interface from this component using
CoCreateInstance() API. This API fails with return value as
REGDB_E_CLASSNOTREG. I checked the registry entries and the CLSID and
interface entries are perfectly alright.
>
> This whole code is built on (compiled on) Win2K with VC++ 6.0. The code
works fine on Win2K hosts but it fails on .Net.
>
> I am providing the code snippet for the same.
> Please help me.
>
> Thanks and regards,
> -Shweta.
>
> /* Registration of my component.*/
> hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
> /* SECURITY_DESCRIPTOR g_sd is set properly. */
> if (!CoInitializeSecurity(&g_sd, -1, NULL, NULL,
RPC_C_AUTHN_LEVEL_CONNECT,
> RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE,
NULL))
> {
> hr = CoRegisterClassObject(CLSID_SimpleObject, &classFactory,
> CLSCTX_SERVER, REGCLS_MULTIPLEUSE,
&dwRegister);
> if (FAILED(hr))
> {
> g_isDCOMSupported = FALSE;
> CoUninitialize();
> return;
> }
> else
> {
> g_isDCOMSupported = TRUE;
> }
> }
>
> /*Using the component.*/
> hr = CoInitialize(NULL);
> if (FAILED(hr))
> return;
> hr = CoCreateInstance(CLSID_SimpleObject, NULL, CLSCTX_SERVER,
> IID_IUnknown, (void **)&ptrIunkn);
> if (FAILED(hr))
> // log error;
> ......
>
>
>
>
>
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