DCOM error Access Denied in service
From: Otis Bricker (obricker_at_my-dejanews.com)
Date: 09/04/03
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Date: Thu, 04 Sep 2003 12:20:50 -0700
This may be something obvious but I am missing it. W2k Client and Server
used thoughout.
I have an NT service that creates gets an interface to a COM server(.exe) I
wrote. When I have the service run as an administrator, it accesses the
SERVER fine. If I access the SERVER from a GUI on the same machine, logged
in as a non-admin, all is fine. But when I have the service run as that
non-admin, CoCreateInstance for the server fails and I get a message in the
event log saying that there was a DCOM error:
Access denied attempting to launch a DCOM Server. The server is:
{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
The user is UserName/DomainName, SID=S-1-5-21-XXXXXXXXX-XXXXXXXXX-XXXXXXXX-
XXXX.
The instance of the SERVER should be running on the same machine as the
SERVICE. And is created calling:
ICnvApplictionPtr m_papp; //com_ptr_t<ICnvApplication>
m_pApp.CreateInstance(__uuidof(CnvApplicationATL),NULL,
CLSCTX_LOCAL_SERVER);
So I would think DCOM should be able to stay out of this.
I can create an ADODB::ConnectionPtr in the same thread with CLSCTX_ALL and
it works fine as the non-admin;
This has bugged me all week. Could someone point out where the hole in my
head is?
Otis
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