When is ASP.Net 4 available on a server

i was building a new small website for an existing client, and thought about building it with ASP.Net 4. But in 开发者_运维百科the apppoolsettings, i could only choose framework 2.0, so i guessed that 4.0 is not available on the server.

Is it something i have to install on the server, or will it be installed via windows update somewhere in time?

it's a win2008 standard server.

You can certainly download and install it yourself, e.g. from here. You want the full .NET 4, not the .NET 4 client profile - that doesn't include ASP.NET.

According to this blog it will eventually become an optional update on Windows servers (if it isn't already).

you just need to install .net framework 4.0 on server.