Update for Windows XP / x64 / Server 2003 (KB914841)

Install this update to reduce the number of filters that need to be authored and maintained in an IPsec Domain Isolation or Server Isolation deployment. This update removes the need for explicit infrastructure permit filters by introducing an enhanced ‘fallback to clear’ behavior. A Domain Isolation deployment will often require up to 500 filters; this update reduces it to two filters in most cases. After you install this item, you may have to restart your computer.
Download:
Update for Windows XP (KB914841)
Update for Windows XP x64 Edition (KB914841)
Update for Windows Server 2003 (KB914841)
Update for Windows Server x64 Edition (KB914841)