Required system software not installed

Question

Here is the message:

Microsoft.NET Framework Version 2.0 is required to continue. 

It then tells me to download it for free from Microsoft.  When I tried the first time it told me that application is not available for Windows Vista (I have recently upgraded to Windows 7 and am not running Vista).  Then I tried installing it again and it said to go to Control Panel and "Turn Windows Off/On".  I looked at the installed programs for Windows and it showed Microsoft.NET Framework Version 3.5 is already installed.

Why would I need to install 2.0 as well?  How do I get around the error message that says I can't install it on Vista?  What do I turn off on Windows in Control Panel in order to install 2.0, if indeed I do end up needing to install that version as well?

Thanks so much!

Answer 1

Hi Learner14,

Welcome to Microsoft Windows.

I would like to inform you that .NET Framework 2.0 is not required on Windows 7 as .NET Framework 3.5 has .NET Framework 2.0, .NET Framework 3.0 and .NET Framework 3.5.

You may visit the link mentioned below for more information:

When you try to install an update for the .NET Framework 1.0, 1.1, 2.0, 3.0, or 3.5, you may receive Windows Update error code "0x643" or Windows Installer error code "1603"http://support.microsoft.com/kb/923100

You may also repair your installation of the .NET Framework if you upgrade your operating system or if the current installation of the .NET Framework becomes corrupted.

For more information on repairing an existing installation of the .NET Framework, you may visit the link mentioned below:

How to repair an existing installation of the .NET Framework

http://support.microsoft.com/kb/306160

Hope this information is helpful.

Regards,

Sujan – Microsoft Support

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Answer 2

I'm having the same problem except I am getting an Error code of: 646.  I've tried the other fixes of the other issues....but nothing is working!   So I thought the code would help to isolate the problem.