Supported Windows Server 2003 editions:-
Windows Server 2003, Web Edition SP2.
Windows Server 2003, Standard Edition SP2, or Windows Server 2003 R2, Standard Edition SP2.
Windows Server 2003, Enterprise Edition SP2, or Windows Server 2003 R2, Enterprise Edition SP2.
Windows Server 2003, Datacenter Edition SP2, or Windows Server 2003 R2, Datacenter Edition SP2.
Windows Server 2003, Small Business Edition R2, Standard.
Windows Server 2003, Small Business Edition R2, Premium.
Windows Server 2003 64x Standard Edition SP2, or Windows Server 2003 R2 64x Standard Edition SP2.
Windows Server 2003 64x Enterprise Edition SP2, or Windows Server 2003 R2 64x Enterprise Edition SP2.
Windows Server 2003 64x Datacenter Edition SP2, or Windows Server 2003 R2 64x Datacenter Edition SP2.
Important
Windows Server 2003 for Itanium-Based Systems is not supported for installing and running Microsoft Dynamics CRM 4.0.
Supported Windows Server 2008 editions:-
Windows Server 2008 Standard (32-bit and x64 versions)
Windows Server 2008 Enterprise (32-bit and x64 versions)
Windows Server 2008 Datacenter (32-bit and x64 versions)
Windows Web Server 2008 (32-bit and x64 versions)
Windows Small Business Server 2008 Standard edition
Windows Small Business Server 2008 Premium edition (32-bit and x64 versions)
