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Windows Server Forum / IIS / IIS General Topics / October 2008

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RDS (MSADC) on Windows 2008, 32 bit

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Brian - 09 Oct 2008 16:03 GMT
Hi,

Have some older ASP applications which depends on RDS.
I have tried to add RDS support, but it fails.

In the event log:
The HTTP Filter DLL C:\Program Files\Common Files\System\msadc\msadcs.dll
failed to load.  The data is the error.

In the IIS manager I have done this:

ISAPI and CGI Restrictions:
 Added C:\Program Files\Common Files\System\msadc\msadcs.dll, named it
MSADC and hatch in Allow ....

The actual website:
 Added ISAPI Filter MSADC and pointed it to the same path as above
 In Handler Mappings: Set the ISAPI-dll state to Enabled

What have I been doing wrong here?

Regards, Brian
David Wang - 09 Oct 2008 19:57 GMT
On Oct 9, 8:03 am, "Brian" <oskar zulu 1 bravo victor (at) oskar zulu
1 bravo victor . delta kilo> wrote:
> Hi,
>
[quoted text clipped - 18 lines]
>
> Regards, Brian

ISAPI [Extension] and ISAPI Filter are two different things. You have
configured the same DLL for both purposes, probably hoping one will
work. However, IIS is a server which obeys all user configuration --
so unless the DLL is both an ISAPI Extension and ISAPI Filter, your
current configuration will fail.

Please turn on "Failed Request Tracing" in IIS7 to help diagnose the
issue. It sounds like you are manually doing something that is not
officially supported, so you need to know about the tools and skills
which enable you to succeed. Just giving the answer is insufficient
since it means you are not able to sustain and support your
configuration.

//David
http://w3-4u.blogspot.com
http://blogs.msdn.com/David.Wang
//
Brian - 10 Oct 2008 09:58 GMT
>> On Oct 9, 8:03 am, "Brian" <oskar zulu 1 bravo victor (at) oskar zulu
>>1 bravo victor . delta kilo> wrote:
[quoted text clipped - 20 lines]
>>
>> Regards, Brian

> ISAPI [Extension] and ISAPI Filter are two different things. You have
> configured the same DLL for both purposes, probably hoping one will
> work. However, IIS is a server which obeys all user configuration --
> so unless the DLL is both an ISAPI Extension and ISAPI Filter, your
> current configuration will fail.

Ok, i get the point. Only thing I have not been able to figure out is exact
how to enable RDS for ASP applications. I was hoping that somebody had an
exact "howto" for this.

> Please turn on "Failed Request Tracing" in IIS7 to help diagnose the
> issue. It sounds like you are manually doing something that is not
> officially supported, so you need to know about the tools and skills
> which enable you to succeed. Just giving the answer is insufficient
> since it means you are not able to sustain and support your
> configuration.

Ok, I will try that

Thanks for the help.

Regards, Brian
David Wang - 10 Oct 2008 11:02 GMT
On Oct 10, 1:58 am, "Brian" <oskar zulu 1 bravo victor (at) oskar zulu
1 bravo victor . delta kilo> wrote:
> >> On Oct 9, 8:03 am, "Brian" <oskar zulu 1 bravo victor (at) oskar zulu
> >>1 bravo victor . delta kilo> wrote:
[quoted text clipped - 44 lines]
>
> - Show quoted text -

The main question is support of the software configuration. If
Microsoft does not support it, even if you find a HOWTO, you are still
responsible for supporting the combination.

When software is supported, you can reasonably ask for official
solutions of how to do something. Otherwise, it's really up to the
person's abilities. And even if I knew the answer, I would not provide
it because I don't want to suddenly "support" something that is not
otherwise officially supported.

Now, I know nothing about RDS, but searching on it tells me that it's
only an ISAPI Extension, which means that it only needs to be enabled
as a Web Service Extension. As long as you install it as a ISAPI
Filter, IIS will fail the request, so you need to remove that
misconfiguration. I don't know what else needs to be done to get RDS
to work on Windows Server 2008, but if it is due to failure DURING
request processing, Failed Request Tracing will show it.

Good luck.

//David
http://w3-4u.blogspot.com
http://blogs.msdn.com/David.Wang
//
Steve Schofield - 11 Oct 2008 02:41 GMT
Try this post on forums.iis.net.
http://forums.iis.net/t/1149165.aspx

Steve

> Hi,
>
[quoted text clipped - 18 lines]
>
> Regards, Brian
 
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