I am attempting to install SBS 2003 Premium and all went well until the ISA Server install. On reboot the application event log contained -
"The ISA Server Standard Edition cannot run. Either the server is using more than 4 processors, or it is configured to use the Active Directory service. Use the source location 100.318.104.22.1683.213 to report the failure. Contact Microsoft (R) Corporation for more information."
I have dual Xeon processors with dual cores. I have seen a report on my server at some point that I have 8 processors which I attribute to the multi-threading component of the processors. I had read that SBS was OK with the the dual core aspect of the Xeon processors.