Installation notes of my demo Exchange 2007 with SP1 x64 installation on a Windows 2008 Ent x64
* Server Manager, Features --> Windows PowerShell
* Server Manager, Roles --> Web Server
- IIS6 Metabase Compatibility & Management Console
- Performance/Dynamic Content Compression & Static Content Compression
- Security/Basic Authentication, Windows Authentication, Digest Authentication
* TROUBLESHOOTING NOTES:
- Make sure IPv6 is enabled (IP may be set to automatic) before running Exchange 2007 with SP1 x64 (Typical) Setup, otherwise Hub Transport installation will fail.
- Windows Server 2008 R2 x64 (build 7100): When installing the Mailbox role, if you get the error number 3221684229 and error description ...Access is denied...: just right click SETUP.EXE, Compatibility tab, select Compatibility box, choose "Windows Vista SP1", then rerun setup.