Microsoft KB Archive/839330

= FIX: Managed Extensions for C++ ISAPI extensions do not load from IIS 6.0 =

Article ID: 839330

Article Last Modified on 12/3/2007

-

APPLIES TO


 * Microsoft .NET Framework 1.1
 * Microsoft Windows XP Professional
 * Microsoft Internet Information Services 6.0

-





SYMPTOMS
When a user makes a request for an Internet Server API (ISAPI) extension that is hosted on a computer that is running Microsoft Internet Information Server (IIS) version 6.0 or Microsoft Windows XP Professional with Service Pack 2 (SP2), the extension may not load.

This problem may occur if the ISAPI extension was written in Microsoft Visual Studio .NET by using Managed Extensions for C++ and was compiled by using the /CLR switch.

When this problem occurs, the user may receive the following error message in the client Web browser:

A dynamic link library (DLL) initialization routine failed.



CAUSE
For security reasons, IIS 6.0 or Windows XP Professional SP2 adds the following string as a prefix to all modules before IIS loads the modules: \\?\ The Microsoft .NET Framework does not correctly interpret this new syntax. Therefore, the ISAPI extension does not load.



Software update information
A supported software update is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This software update may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Microsoft .NET Framework 1.1 service pack that contains this software update.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the software update. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;[LN;CNTACTMS]

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have the Microsoft .NET Framework version 1.1 installed to apply this software update.

Restart requirement
You do not have to restart your computer after you apply this software update.

Software update replacement information
This software update does not replace any other software updates.

File information
The English version of this software update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version        Size       File name ---  17-Apr-2004  01:32  1.1.4322.1031     77,824  Corperfmonext.dll 17-Apr-2004 01:29  1.1.4322.1031    282,624  Fusion.dll 17-Apr-2004 01:29  1.1.4322.1031    311,296  Mscorjit.dll 17-Apr-2004 01:32  1.1.4322.1031    102,400  Mscorld.dll 19-Apr-2004 05:23  1.1.4322.1031  2,093,056  Mscorlib.dll 17-Apr-2004 01:22                    10,756  Mscorlib.ldo 17-Apr-2004 01:30  1.1.4322.1031  2,502,656  Mscorsvr.dll 17-Apr-2004 01:31  1.1.4322.1031  2,490,368  Mscorwks.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about the terminology that is used to describe Microsoft product updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kberrmsg kbbug kbfix kbqfe kbnetframe110presp1fix kbhotfixserver KB839330

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.