Net framework win7 v4 0 30319

actually there newer version 4.5 for .net framework

the link :
http://msdn.microsoft.com/en-us/library/5a4x27ek.aspx

u can download web installation or stand alone (redistributable) from there..

edit: the 4.5 also contains what in 4.0 so it advaised to install the 4.5

btw OP. u had two identical thread close one or merge them.....
 
There is no need to install any version of .net.

If an application needs a specific version of .net that is not installed the app will install that version for you.

Otherwise it sits there doing nothing, no benefit at all.