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Error 998 when running from remote server

 
 
Grumpy Old Coder
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      25th Feb 2009
[Apologies for all the posts. Still trying to get the right 'no-spam alias'
to trigger an official response]

I've got several applications which fail to run from a remote server. That
is, if I browse to C:\.... and double-click the app starts right up, but if I
browse to \\anotherMachine\c$\... and double-click, I get a dialog box titled
"MyApp.exe - MSCOREE.DLL", stating:

Failed to delay load library urlmon.dll (Win32 error: 998).
This program can no longer run and will now terminate.

The application is written in C++,but uses a library using managed code
(.NET 1.1). I've tried loosening up all the security settings I could find,
but still haven't had any luck. Other applicaitons in the same project work
fine.

All have been developed using Visual Studio 2003.

Has anyone else run into (and, even better, solved) this problem?

Thanks!

 
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Jialiang Ge [MSFT]
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      26th Feb 2009
Good morning Grumpy Old Coder. Welcome to Microsoft Newsgroup Support
service. My name is Jialiang Ge [MSFT]. It's my pleasure to work with you
on this thread.

The question is about the error "Failed to delay load library urlmon.dll
(Win32 error: 998)" when you start a C++ app (am I right that this is a
native C++ app, not a managed C++ one?) from a remote computer through the
network shared folder "\\machine\C$\...". The C++ application hosts CLR
(http://support.microsoft.com/kb/953836) to use a .NET 1.1 assembly.

Although I do not have a direct answer for the question because the problem
may be related to some app/env specific factors, I do have several valuable
suggestions to narrow down the problem and figure out the solution
gradually.

Let's start with the analysis of the error message:
"Failed to delay load library urlmon.dll (Win32 error: 998)"

"delay load library urlmon.dll" should result from the fact that, CLR
hoster implicitly links mscoree.dll (either 1.1 version or 2.0 version
depending on whether the machine is installed with .NET 2.0) that
delay-loads URLMON.dll. You can view this using the tool Dependency Walker
http://www.dependencywalker.com/. URLMON.dll, the OLE32 Extension for
Win32, is a part of Windows located in the folder C:\Windows\System32.
URLMON.dll is not loaded in the load time, and it's loaded only when the
app runs from a remote machine (e.g. from \\machine\C$\...) so as to
perform the internet security checking
(URLMON.dll!CoInternetCreateSecurityManager). This can be the reason for
the symptom that the error is not thrown when the app runs locally.

I'm also reminded about a very similar case that I once handled. In that
case, the customer had an application written in native C++ (CLR support is
off), which calls a WinForm code (written in C#) through a C++ wrapper DLL
that supports CLR. The native C++ application is using implicit linking to
load the C++ wrapper DLL. In some of the deployment machines the
application fails to launch. I analyzed the memory dump from the customer
with the loader snaps, and find that the loader is failing to load modules,
so the process exits without any information. I found that the winmm.dll is
statically linked with the application. After I removed the static linking
to winmm.dll, and used the LoadLibrary API (explicit linking) to call the
winmm.dll function, the issue was resolved. It appears that loading
winmm.dll sometime interferes with delayload. A similar report is here:
http://connect.microsoft.com/VisualS...k.aspx?Feedbac
kID=329819. Grumpy Old Coder, please check whether your app has winmm.dll
linked. The tool Dependency Walker can help.

A very effective and easy trouble-shooting skill for module-loading
problems is to use the function "Profile" in Dependency Walker
(http://www.dependencywalker.com/). It records the load of the modules and
the function calls when an app runs. Please refer to this article for the
steps to use Depends to get the profiling log
http://support.microsoft.com/kb/256872. You can then either analyze the log
by yourself, or send the log to my mailbox: http://www.pcreview.co.uk/forums/(E-Mail Removed).

The Win32 error 998 means ERROR_NOACCESS (Invalid access to memory
location.), which is the Win32 error code of the Windows status code
STATUS_ACCESS_VIOLATION. In other words, the operating system loader
encounters an access violation while mapping the specified DLL file image
(urlmon.dll in this case) or executing the startup code. To trouble-shoot
this failure, it is also necessary to run the application under a debugger
and enable first chance exception handling for the C0000005 Access
Violation exception. If an access violation occurs when the LoadLibrary()
function is called, the application will break into the debugger. The
debugger's call stack can then be used to trace where the exception
occurred. The stack trace should help you narrow down the actual problem
related to the exception being encountered. Here is an KB article that
provide more info of this: http://support.microsoft.com/kb/196069. Grumpy
Old Coder, if you are fine with debugging, you may consider setting up
windbg to debug the problem. Otherwise, please capture a memory dump
http://support.microsoft.com/kb/286350 when the error occurs and send the
dump to me. Please note that my previous suggestions (checking winmm.dll,
capturing dependent logs) are easier to do than debugging. I suggest trying
those skills first.

Last but not least, I notice that you have tried a lot of times setting the
no-spam account of our service since Jan. The account is configured
rightly. In future, you may consider contacting this email address:
(E-Mail Removed) or reading this article
http://blogs.msdn.com/msdnts/pages/postingAlias.aspx. My managers take
immediate action to guide you to configure the account as soon as they see
the email.

Best Regards,
Jialiang Ge ((E-Mail Removed), remove 'online.')
Microsoft Online Community Support

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
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Jialiang Ge [MSFT]
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      2nd Mar 2009
Hello Grumpy Old Coder,

It has been a couple of days since my last reply. I am writing to check the
status of the issue on your side. Would you mind letting me know the result
of the suggestions? If you need further assistance, feel free to let me
know. I will be more than happy to be of assistance.

Have a great day!

Regards,
Jialiang Ge ((E-Mail Removed), remove 'online.')
Microsoft Online Community Support

=================================================
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 Removed).

This posting is provided "AS IS" with no warranties, and confers no rights.
=================================================

 
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Grumpy Old Coder
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      6th Mar 2009
Thanks for checking up. We're shifting offices, so I haven't been able to
look too deeply into it yet, but I confirmed that the application is loading
winmm.dll. Another post you referenced suggests delay loading could solve
the problem. How do I know what to delay-load?

Thanks,
Mike


 
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Jialiang Ge [MSFT]
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      6th Mar 2009
Hello Mike

You need to dynamically load (aka explicitly link) or try delay-loading
winmm.dll so that the module is not loaded until one of its symbols needs
to be called. I have the successful experience of using dynamically loading
winmm.dll to solve the error 998, but I did not have a chance to try
delay-loading winmm.dll. It deserves your test.

If you are not acquainted with the use of dynamic loading or dalay-loading,
I think that some simple examples can help you quickly ramp up the
knowledge. Our team recently created a project on CodePlex named
All-In-One Code Framework (CodeFx).

http://cfx.codeplex.com/

In the "Examples for Library", you can find the examples of dynamic-loading
and delay-loading in CppLoadLibrary, and CppDelayloadDll. Each example has
a ReadMe.txt file that documents the example in detail.

If you have any additional questions or concerns, please feel free to tell
me.

Regards,
Jialiang Ge ((E-Mail Removed), remove 'online.')
Microsoft Online Community Support

=================================================
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 Removed).

This posting is provided "AS IS" with no warranties, and confers no rights.
=================================================

 
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Jialiang Ge [MSFT]
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      6th Mar 2009
Supplement my last reply:

"Delay load the modules dependent on WINMM.dll"

To find out the module that depends on winmm.dll, you can use Dependency
Walker, the tool that I mentioned in the first reply. It can dump the
dependency tree for you.

Regards,
Jialiang Ge ((E-Mail Removed), remove 'online.')
Microsoft Online Community Support

=================================================
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 Removed).

This posting is provided "AS IS" with no warranties, and confers no rights.
=================================================

 
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Jialiang Ge [MSFT]
Guest
Posts: n/a
 
      10th Mar 2009
Hello Mike

How are you? Are you going along well with my suggestion? If you need
further assistance, feel free to let me know. I will be more than happy to
be of assistance.

Have a great day!

Regards,
Jialiang Ge ((E-Mail Removed), remove 'online.')
Microsoft Online Community Support

=================================================
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 Removed).

This posting is provided "AS IS" with no warranties, and confers no rights.
=================================================

 
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