SYMPTOMS
When you query a Web service for the Web Services
Description Language (WSDL), you may receive the following exception:
System.InvalidOperationException: There was an error
reflecting 'System.Web.Services.Description.ServiceDescription'. --->
System.InvalidOperationException: You need to add XmlChoiceIdentifierAttribute
to the 'Extensions' member.
This exception occurs because a race condition in Web service configuration handling corrupts the
ServiceDescription object for the Web service.
RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
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.
The English
version of this hotfix has the file attributes (or later) 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 Platform
-------------------------------------------------------------------------------------------------------
21-Nov-2003 03:39 1.0.3705.473 200,704 Aspnet_isapi.dll x86
21-Nov-2003 03:32 4,169 Aspnet_perf.h
21-Nov-2003 03:39 513,302 Aspnet_perf.ini
21-Nov-2003 03:39 510,714 Aspnet_perf2.ini
21-Nov-2003 03:39 1.0.3705.473 24,576 Aspnet_regiis.exe x86
21-Nov-2003 03:39 1.0.3705.473 28,672 Aspnet_wp.exe x86
21-Nov-2003 02:54 1.0.3705.473 69,632 Corperfmonext.dll x86
17-Jun-2003 21:43 16,597 Installpersistsqlstate.sql
17-Jun-2003 21:43 17,331 Installsqlstate.sql
09-Sep-2003 00:28 17,807 Installsqlstatetemplate.sql
21-Nov-2003 02:52 1.0.3705.473 303,104 Mscorjit.dll x86
21-Nov-2003 17:46 1.0.3705.473 1,953,792 Mscorlib.dll x86
21-Nov-2003 02:46 10,288 Mscorlib.ldo
21-Nov-2003 02:53 1.0.3705.473 2,273,280 Mscorsvr.dll x86
21-Nov-2003 02:54 1.0.3705.473 2,269,184 Mscorwks.dll x86
21-Nov-2003 03:36 1.0.3705.473 20,480 Perfcounter.dll x86
23-Aug-2002 02:23 15 Smartnav.htm
30-Jul-2003 00:04 8,728 Smartnav.js
21-Nov-2003 17:47 1.0.3705.473 1,179,648 System.data.dll x86
21-Nov-2003 17:46 1.0.3705.473 1,695,744 System.design.dll x86
21-Nov-2003 17:45 1.0.3705.473 1,175,552 System.dll x86
21-Nov-2003 17:42 1.0.3705.473 241,664 System.messaging.dll x86
21-Nov-2003 17:42 1.0.3705.473 311,296 System.runtime.remoting.dll x86
21-Nov-2003 17:41 1.0.3705.473 131,072 System.runtime.serialization.formatters.soap.dll x86
21-Nov-2003 17:45 1.0.3705.473 1,200,128 System.web.dll x86
21-Nov-2003 17:43 1.0.3705.473 507,904 System.web.services.dll x86
21-Nov-2003 17:46 1.0.3705.473 1,994,752 System.windows.forms.dll x86
21-Nov-2003 03:45 16,660 System.windows.forms.ldo
21-Nov-2003 03:40 1.0.3705.473 57,344 System.windows.forms.tlb
21-Nov-2003 17:45 1.0.3705.473 1,302,528 System.xml.dll x86
21-Nov-2003 17:39 1.0.3705.473 32,768 Tlbimp.exe x86
17-Jun-2003 21:43 1,419 Uninstallpersistsqlstate.sql
09-Sep-2003 00:28 2,119 Uninstallsqlstatetemplate.sql
21-Nov-2003 17:40 1.0.3705.473 65,536 Wsdl.exe x86