.NET Framework 4 is required to run and develop ASP.NET 4.0 sites.
Install .NET Framework 4
The Microsoft .NET Framework 4 web installer package downloads and installs the .NET Framework.
- Recommended Minimum: Pentium 1 GHz or higher with 512 MB RAM or more
- Minimum disk space: 850 MB
- Internet Information Services (IIS) version 6.0 or later
- Microsoft Data Access Components 2.8 or later
Find ASP.NET 4.0 web hosting provider
You could also find ASP.NET 4 hosting provider and just to deploy your ASP.NET 4.0 website.