FIX: You receive an unhandled exception in System.Xml.XmlException when you pass a string that contains characters that are not valid across remoting boundaries in the .NET Framework 1.1 SP1

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SYMPTOMS

When you try to pass a string across remoting boundaries in the Microsoft .NET Framework 1.1 Service Pack 1 (SP1), you may receive an exception error message that is similar to the following:

Unhandled Exception: System.Xml.XmlException: '♥', hexadecimal value 0x03, is an invalid character. Line 4, position 63.

This problem occurs when the following conditions are true:

You make the call across remoting boundaries by using the HttpChannel class and the SoapFormatter class.
The passed string contains XML characters that are not valid.

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CAUSE

This problem occurs because the SoapFormatter class does not correctly encode special characters when it serialized the string according to the XML specification.

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A supported hotfix 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 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 1.1 service pack that contains this hotfix.

To resolve this problem immediately, 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:

http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)

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

Microsoft .NET Framework 1.1 Service Pack 1 (SP1) is required.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

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 tool in Control Panel.

   Date         Time   Version        Size     File name
   --------------------------------------------------------------------------------------------
   16-Mar-2005  16:27  1.1.4322.2306  135,168  System.runtime.serialization.formatters.soap.dll

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