.net Framework 4.0 Installation requirement

Posted on 2012-08-13
Last Modified: 2012-08-13
I can't seem to find a specific answer to this.  I am sure this will be an easy one for most of you.

I have a Windows 2003 R2 Server with Service Pack 1.  It does not have any of the .net Framework installs on it at all.  Do I have to upgrade to R2 Service Pack 2 to install .net Framework 4 on it first?  

Also, do I have to go through Control Panel/Add Remove Windows Components and install .net Framework 2.0 first prior to running the .net Framework 4 install or can I just install .net Framework 4 from scratch?

Thanks so much for your help!!
Question by:drummer1960
    LVL 2

    Accepted Solution


    See below the .net 4 Requirements, as you can see it does require SP2 for server 2003.  You do not have to install .net 2 first unless the application you are using specifically requires it.  Also you will have to isntall .net 3 or 3.5 if your app uses it.   You can download .net 4 from:  

    However i highly reccomend using Microsoft update instead to update  to .Net 4

    "System requirements
    Supported operating systems: Windows 7, Windows 7 Service Pack 1, Windows Server 2003 Service Pack 2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 SP1, 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)
    Windows 7 SP1
    Windows Server 2008 R2 SP1
    Supported Architectures:
    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
    Windows Installer 3.1 or later
    Internet Explorer 5.01 or later
    LVL 1

    Author Comment

    Thank you for your post!

    In your comment "See below the .net 4 Requirements, as you can see it does require SP2 for server 2003."  I have Server 2003 R2 with SP1.  Is this the same for Server 2003 and Server 2003 R2?

    Do you mean that if there is no indication in our support materials from the application, I can just install the full .net 4.0 from the beginning and not have to install 2.0, or 3.51?

    Will I have to install IIS and aspnet as well?

    I appreciate it so much!!
    LVL 2

    Expert Comment

    No Server 2003 SP2 and Server 2003 R2 are not the same, it looks like Microsoft has forgotten to add the R2 Version to the System Requirements.  However R2 version was released after the SP2 for Server 2003 so therefore you will not need to install any Service pack.  You should be able to install .net 4 right away.  Best way to be sure though is go to Microsoft Update (  and see if .net 4 is on the download list.

    Yes, if you app only requires .net 4 then you only have to install that, you don't have to install older versions.
    LVL 1

    Author Closing Comment

    GREAT help!!!

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