SYMPTOMS
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:
The binding handle is invalid.
CAUSE
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.
RESOLUTION
Hotfix information
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 ISA Server 2000 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 phone 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.
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.
Date Time Version Size File name
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05-Apr-2005 16:10 3.0.1200.413 1,844,728 Msfpccom.dll