After you enable compression for HTTP content in ISA Server 2004 with Service Pack 2, the Microsoft Firewall service may randomly stop responding

After you enable compression for HTTP content in Microsoft Internet Security and Acceleration (ISA) Server 2004 with Service Pack 2 (SP2), the Microsoft Firewall service may randomly stop responding. Additionally, the Microsoft Firewall service may stop unexpectedly.

When this problem occurs, the following events are logged:

System log

Event Type: Warning
Event Source: Microsoft ISA Server Web Proxy
Event Category: None
Event ID: 23000
Date: 8/4/2006
Time: 12:17:44 PM
User: N/A
Computer: ComputerName
Description: ISA Server was unable to decompress a response body from /Stylesheets because the following error occurred: 0x8007000d. This error may occur when the available memory is insufficient, the response is corrupted due to a network problem, or the server returns an illegal response.

Event ID: 7034
Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7034
Date: Date
Time: Time
User: Not applicable
Computer: ServerName
Description: The Microsoft Firewall service terminated unexpectedly. It has done this 1 time(s).

Application log

Event ID: 1000
Event Type: Error
Event Source: Microsoft ISA Server 2004
Event Category: None
Event ID: 1000
Date: Date
Time: Time
User: Not applicable
Computer: ServerName
Description: Faulting application wspsrv.exe, version 4.0.2165.594, stamp 43cd50a5,faulting module ntdll.dll, version 5.2.3790.1830, stamp 424377d2, debug? 0, fault address 0x00030115.

To resolve this problem, install the ISA Server 2004 hotfix package that is dated August 23, 2006. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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