DsGetDcName() failures

[Nick Burkitt]

I have an application that uses DsGetDcName() to determine the sites (and
domains) of servers in the network.
I have found that DsGetDcName() fails rather often, and the reason(s) is not
obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE, although
RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply retrying the call
will result in success, but more often it does not.
What can cause DsGetDcName() to fail (excluding the obvious situation where
the server is down or otherwise not accessible)?
Thanks,

-Nick

 

[Bob Barrows [MVP]]

I have an application that uses DsGetDcName() to determine the sites
(and domains) of servers in the network.
I have found that DsGetDcName() fails rather often, and the reason(s)
is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
retrying the call will result in success, but more often it does not.
What can cause DsGetDcName() to fail (excluding the obvious situation
where the server is down or otherwise not accessible)?
Thanks,

What kind of application is this and what library provides the DsGetDcName
method?

 

[Nick Burkitt]

Hi Bob.

Thanks. It's a VC++ app and I'm calling DsGetDcName() directly. I'm
passing a NETBIOS name as the first parameter and requesting a DNS-style name
by setting flag DS_RETURN_DNS_NAME. If the initial call fails with
ERROR_NO_SUCH_DOMAIN, I set the DS_FORCE_REDISCOVERY flag and repeat the
call. If the call fails for any other reason, I wait a bit (200 ms, I
believe), and repeat the call. Ten strikes and you're out.
Anything else you need?

-Nick

 

[Steven Cheng [MSFT]]

Hi Nick,

As for the applicaiton, it is not an ASP web application, but a VC++ based
desktop application ,correct?

I haven't used Directory Sercies API much, however, since the error also
contains E_ACCESSDENIED, is it related to your application's running
identity since you may make remote query call to some remote machines?
Also, have you checked to see whether those error mostly ocurs when you
call the API against some certain remote machines?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


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From: =?Utf-8?B?TmljayBCdXJraXR0?= <[email protected]>
References: <[email protected]>

Subject: Re: DsGetDcName() failures
Date: Thu, 22 May 2008 18:47:01 -0700

 

[Bob Barrows [MVP]]

You'll be unlikely to get an answer here: we concentrate on ASP/scripting
questions. Congratulations if you do
I've never done any C++ myself so there is no possibility that I will be
able to help.

You might try a group devoted to C++ questions. Perhaps one of these:
http://forums.microsoft.com/MSDN/default.aspx?ForumGroupID=9&SiteID=1

Or fire up a newsreader and go to comp.lang.c++

 

[Nick Burkitt]

Hi Bob.

Wow - I must have fat-fingered the group name when I first posted. This was
supposed to go to ASDI General Questions. :-#
Thanks for your time - I'll post again with hopefully better aim.

-Nick

 

[Steven Cheng [MSFT]]

Hi Nick,

I originally also guess that you may post the question in this group by
mistake

Anyway, if you have any ASP related web dev questions, welcome to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
(e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------

From: =?Utf-8?B?TmljayBCdXJraXR0?= <[email protected]>
References: <[email protected]>

<[email protected]>

Subject: Re: DsGetDcName() failures
Date: Fri, 23 May 2008 09:39:01 -0700