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From: Nick Burkitt on 22 May 2008 18:51
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
From: Bob Barrows [MVP] on 22 May 2008 21:20
Nick Burkitt wrote:
> 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?

--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"


From: Nick Burkitt on 22 May 2008 21:47
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


"Bob Barrows [MVP]" wrote:

> Nick Burkitt wrote:
> > 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?
>
> --
> Microsoft MVP - ASP/ASP.NET
> Please reply to the newsgroup. This email account is my spam trap so I
> don't check it very often. If you must reply off-line, then remove the
> "NO SPAM"
>
>
>
From: Steven Cheng [MSFT] on 22 May 2008 23:56
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?= <nick.burkitt(a)newsgroups.nospam>
>References: <8B28A74D-F4EA-413A-A1E1-26E88DCD4682(a)microsoft.com>
<evkagMHvIHA.3968(a)TK2MSFTNGP04.phx.gbl>
>Subject: Re: DsGetDcName() failures
>Date: Thu, 22 May 2008 18:47:01 -0700

>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
>
>
>"Bob Barrows [MVP]" wrote:
>
>> Nick Burkitt wrote:
>> > 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?
>>
>> --
>> Microsoft MVP - ASP/ASP.NET
>> Please reply to the newsgroup. This email account is my spam trap so I
>> don't check it very often. If you must reply off-line, then remove the
>> "NO SPAM"
>>
>>
>>
>

From: Bob Barrows [MVP] on 23 May 2008 07:00
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 wrote:
> 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
>
>
> "Bob Barrows [MVP]" wrote:
>
>> Nick Burkitt wrote:
>>> 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?
>>
>> --
>> Microsoft MVP - ASP/ASP.NET
>> Please reply to the newsgroup. This email account is my spam trap so
>> I don't check it very often. If you must reply off-line, then remove
>> the "NO SPAM"

--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"


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