ISA Server 2004 and Windows Server 2008 Compatibility

We have an ISA server 2004 system and a Windows Server 2008 Standard machine running the firewall client for ISA server 2004.

The Windows Server 2008 machine reports that 'Firewall Client for ISA Server 2004 has a known compatibility issue with this version of Windows'. Does anyone know what this compatibility issue is?

I know that Microsoft say that ISA Server 2004 is not supported on Windows Server 2008 clients but they don't say why. Our 2008 machine is hanging regularly and I would like to know if that's related to the firewall client for ISA server 2004.
Jim JonesAsked:
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Jim JonesAuthor Commented:
Unfortunately we don't have any authorisation to disable it. However we replaced the server with one running Windows Server 2003 and all the problems went away. I think it's safe to say that there are major issues between Server 2008 and ISA 2004.
Abhay PujariCommented:
I am not sure why Microsoft is not telling the truth but you can find whole list here which is supported
Ahmed ShahbaSystem ArchitectCommented:
Disable it and try again.
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