Problem with migrating from ISA RC1 to ISA Evaluation (120). After setup (Release Candidate 1 (RC1) Upgrade) Firewall and Web Proxy haven't worked. Other ISA services work properly. In Event Log error 14079. I run rmisa and re-run setup (from ISA Server 2000 Evaluation Edition), but situation bad too. I run rmisa and re-run setup (from ISA RC1) and all services work.
When upgrading to a new version of ISA Server, always re-install the firwall client, this should solve some problems.