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You use the System.Xml.Serialization.XmlRootAttribute.Namespace property for an anonymous Web Service type in the Microsoft .NET Framework 2.0. After you do this, you may receive an "InvalidOperationException" error message during service description generation.
For example, you may specify that an ASP.NET Web Service file (.asmx) use the System.Xml.Serialization.XmlRootAttribute.Namespace property for an anonymous Web Service type. When you try to browse the .asmx file, you may receive the following error message during service description generation:
Note The System.Xml.Serialization.XmlRootAttribute.Namespace property is used to obtain or to set the namespace for the XML root element.
This problem occurs because the schema that is generated for the Web Service type does not match the serialized instance. This behavior occurs if the System.Xml.Serialization.XmlRootAttribute.Namespace property is used on an anonymous Web Service type. Therefore, the data exchange between the client and the server is impossible during the service description generation.
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next .NET Framework 2.0 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer 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.
No prerequisites are required.
Hotfix replacement information
This hotfix does not replace any other hotfixes that are installed on the computer.
You do not have to restart the computer after you apply this hotfix.
The English version of this hotfix 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 item in Control Panel.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information, 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