Force Reboot, Update for HTTP issues in Internet Security and Acceleration Server 2004 Service Pack 2
From the SBS Product Team blog.
We've seen a few cases now where ISA Hotfix 916106 does not prompt for a reboot, as the hotfix indicates it should. The hotfix does, however, successfully install. In addition, after the hotfix is installed the following services will be in a stopped state:
Exchange Routing Engine
Simple Mail Transfer Protocol (SMTP)
World Wide Web Publishing Service
The Microsoft Firewall service not restarting will throw ISA in to lockdown mode, which can potentially prevent remote administrators from being able to connect to manually reboot the server. In either case, the server should be rebooted.
A knowledgebase article is now available.
If you use a computer that is running Microsoft Small Business Server
2003 Premium Edition with ISA 2004, you may not be prompted for reboot.
See the rest of the knowledgebase article for a suggested solution.