You receive a "The binding handle is invalid" error message if you try to programmatically delete cached Web content from a remote member of an ISA Server 2000 array

If you try to programmatically delete information from the Web proxy cache of a computer that is running Microsoft Internet Security and Acceleration (ISA) Server 2000, you receive the following error message:

This problem occurs if the following conditions are true:

• You use a program that calls the FetchUrl method.
  
  Note The DeleteURL.vbs script that is included with the ISA Server 2000 Software Development Kit (SDK) uses the FetchUrl method.
• You try to delete the cached Web content from a remote member of an ISA Server 2000 Enterprise Edition array.

This problem occurs because when you run this program from a remote computer, ISA Server does not pass the correct parameters to the RPC Endpoint Mapper. Therefore, the RPC Endpoint Mapper cannot determine the correct ISA Server array member with which to establish a connection. If you run the program locally on the ISA Server array member, you can delete the cached Web content successfully.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

You must have ISA Server 2000 Service Pack 2 (SP2) installed to apply this hotfix. To obtain ISA Server 2000 SP2, visit the following Microsoft Web site:

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.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the FetchUrl method, visit the following Microsoft Web site: For more information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base: