can .net framework 4 works on top of windows xp?

I tried to run a small application that I've written using VS2010 on my old Windows XP desktop. I got the yellow screen of death showing me a portion of the web.config with assemblies.

<compilation debug="true" targetFramework="4.0">

It looks like it didn't like the 4.0 framework. I re-wrote it, targeting 3.5 framework, this time it worked perfectly.

I'd like to know if I can install .net framework 4.0 on top of Windows XP?

Th开发者_如何学Goanks for helping

The system requirements indicate that Windows XP is supported as long as you have SP3 installed.

Yes, that's possible. .NET 4.0 works fine on Windows XP machines. Just make sure SP3 is installed first.

Yes you can :) Just download it and install

See MSDN, you need WinXP SP3