Un nouveau correctif fonctionnel est disponible pour ISA Server 2004.

La fiche KB associée est la suivante :

Web proxy clients cannot access some Web sites through ISA Server 2004
http://support.microsoft.com/kb/908501/en-us

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 Microsoft ISA Server 2004 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 telephone numbers and information about support costs, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support

File name    File version   File size  Date Time          Platform
------------------------------------------------------------------
W3filter.dll 4.0.2163.281   661,216    27-Sep-2005 16:15  x86

La liste des correctifs fonctionnels d'ISA Server 2004 est visible en cliquant sur le lien suivant:
http://blogs.technet.com/stanislas/articles/PatchsISA.aspx