unable to install Microsoft .NET framework 4.0 on windows server 2003 R2


  • HI there,

    I was trying to install Microsoft .NET framework 4.0 on windows 2003 server R2 but an error is being thrown


    OS Version = 5.2.3790, Platform 2, Service Pack 2
    [10/25/2010, 5:50:41]OS Description = Win2K3R2 - x86 Datacenter Edition Service Pack 2

    OS= Windows server 2003 R2

    Package Name = Microsoft .NET Framework 4 Setup
    [10/25/2010, 5:50:42]Package Version = 4.0.30319

    Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:01:57).


    Please help

    Monday, October 25, 2010 1:13 PM


  • Hi snldeveloper,


    Thank you for your post.


    At first, .NET Framework 4 is supported on Windows Server 2003 SP2. Please double check whether or not the OS is compatible with this condition.

    Secondly, after I have researched your log files, I found the following information.

    [10/25/2010, 23:43:54] BlockIf: Microsoft .NET Framework 4 is already a part of this operating system, but it is currently turned off. To enable the .NET Framework 4, use Turn Windows features on or off in Control Panel.

    Regarding above information, please check whether any .NET Framework features are turned on or not.


    Thirdly, [10/25/2010, 23:45:31]Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:01:37).

    I would recommend that you should download .NET Framework Verification tool to verify whether all versions of .NET Framework are installed correctly on your machine or not.

    I would recommend that could you please uninstall all versions of .NET Framework thoroughly via Add/Remove Program and download .NET Framework 3.5 SP1 and install it on your side.

    After you have installed it successfully, please download .NET Framework 4 and install it again. Does it work?


    If you have any issues during installation, please download Collect tool to collect installation log files and upload it in your reply.




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    • Marked as answer by Larcolais Gong Monday, November 01, 2010 6:02 AM
    Wednesday, October 27, 2010 5:57 AM

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