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You receive a blank page when your Web browser submits a POST request to an ASP Web site over an ISA Server 2004 or ISA Server 2006 access rule that requires client authentication
Article ID: 922851 - View products that this article applies to.
When your Web browser program submits a POST request to an Active Server Pages (ASP) Web site through Microsoft Internet Security and Acceleration (ISA) Server 2004 or Microsoft Internet Security and Acceleration (ISA) Server 2006, you may receive a blank page in response.
This problem occurs if the following conditions are true:
To resolve this problem, obtain the latest ISA Server Service Pack.
(http://support.microsoft.com/kb/954258/ )How to obtain the latest Internet Security and Acceleration (ISA) Server 2006 Service Pack
(http://support.microsoft.com/kb/891024/ )How to obtain the latest ISA Server 2004 Service Pack
To work around this problem, configure the client Web browser program to use HTTP 1.0 through proxy connections. To do this in Microsoft Internet Explorer, follow these steps:
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:
(http://support.microsoft.com/kb/885957/ )How to install ISA Server hotfixes and updates
Article ID: 922851 - Last Review: April 23, 2009 - Revision: 2.0