Consider the following scenario:
| • | You use Microsoft Internet Security and Acceleration (ISA) Server 2004 as a Web proxy to access a Web site. |
| • | You perform a POST operation on the Web site. |
| • | The Web site sends a "401 Authentication Required" response to the client. |
However, ISA Server drops the "401 Authentication Required" response instead of forwarding the response to the client. This problem may cause the Web access attempt to fail. For example, when you try to upload a large file to the Web site, the upload operation may time out.
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To resolve this problem, follow these steps:
| 1. | Apply the hotfix package that is described in the following Microsoft Knowledge Base article:940709 (http://support.microsoft.com/kb/940709/) Description of the ISA Server 2004 hotfix package: July 25, 2007
|
| 2. | Start Notepad. |
| 3. | Copy the following code, and then paste it into Notepad.Const SE_VPS_GUID = "{143F5698-103B-12D4-FF34-1F34767DEabc}"
Const SE_VPS_NAME = "AllowPrematureServerResponse"
Const SE_VPS_VALUE = true
Sub SetValue()
' Create the root object.
Dim root ' The FPCLib.FPC root object
Set root = CreateObject("FPC.Root")
'Declare the other objects that are needed.
Dim array ' An FPCArray object
Dim VendorSets ' An FPCVendorParametersSets collection
Dim VendorSet ' An FPCVendorParametersSet object
' Get references to the array object
' and to the network rules collection.
Set array = root.GetContainingArray
Set VendorSets = array.VendorParametersSets
On Error Resume Next
Set VendorSet = VendorSets.Item( SE_VPS_GUID )
If Err.Number <> 0 Then
Err.Clear
' Add the item.
Set VendorSet = VendorSets.Add( SE_VPS_GUID )
CheckError
WScript.Echo "New VendorSet added... " & VendorSet.Name
Else
WScript.Echo "Existing VendorSet found... value- " & VendorSet.Value(SE_VPS_NAME)
End If
if VendorSet.Value(SE_VPS_NAME) <> SE_VPS_VALUE Then
Err.Clear
VendorSet.Value(SE_VPS_NAME) = SE_VPS_VALUE
If Err.Number <> 0 Then
CheckError
Else
VendorSets.Save false, true
CheckError
If Err.Number = 0 Then
WScript.Echo "Done with " & SE_VPS_NAME & ", saved!"
End If
End If
Else
WScript.Echo "Done with " & SE_VPS_NAME & ", no change!"
End If
End Sub
Sub CheckError()
If Err.Number <> 0 Then
WScript.Echo "An error occurred: 0x" & Hex(Err.Number) & " " & Err.Description
Err.Clear
End If
End Sub
SetValue
|
| 4. | Save the file as a Microsoft Visual Basic script file by using the .vbs file name extension. For example, use the following name to save the file: AllowPrematureServerResponse.vbs |
| 5. | Start a command prompt, change to the location at which you saved the AllowPrematureServerResponse.vbs file, and then run the following command: cscript AllowPrematureServerResponse.vbs |
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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