Can I run .NET 4.0 web applications on Windows Server 2003?

Question

Does .NET 4.0 work in windows server 2003 and iis 6?

Answer 1

System Requirements

• Supported Operating Systems:
  • Windows 7;
  • Windows Server 2003 Service Pack 2;
  • Windows Server 2008;
  • Windows Server 2008 R2;
  • Windows Vista Service Pack 1;
  • Windows XP Service Pack 3
  • Windows XP SP3
  • Windows Server 2003 SP2
  • Windows Vista SP1 or later
  • Windows Server 2008 (not supported on Server Core Role)
  • Windows 7
  • Windows Server 2008 R2 (not supported on Server Core Role)
• Supported Architectures:
  • x86
  • x64
  • ia64 (some features are not supported on ia64 for example, WPF)
• Hardware Requirements:
  • Recommended Minimum: Pentium 1 GHz or higher with 512 MB RAM or more
  • Minimum disk space:
    • x86 – 850 MB
    • x64 – 2 GB
• Prerequisites:
  • Windows Installer 3.1 or later
  • Internet Explorer 5.01 or later

Microsoft .NET Framework 4 (Web Installer)

Answer 2

Yes, but you might run into some problems. See here.