>>>>>Hi everybody,
>>>>>
>>>>>I'm trying to install SQL Server 2012 Developer Edition from the Installation CD. My first attempt failed, so I'm re-trying now. I don't understand this
>>>>>(see attached).
>>>>>
>>>>>How come I don't have .NET Framework 4.0 if I have VS 2010 SP1 installed and I also have ASP.NET MVC the latest version installed? What may be wrong?
>>>>>
>>>>>The first time it finished with requesting to use the media for VS 2010 Ultimate. But I've installed it may be 2 years ago and I don't remember if I saved (and where) the installation files. I did install it using MSDN Ultimate subscription (which now has already expired).
>>>>>
>>>>>What should I do now?
>>>>>
>>>>>Thanks in advance.
>>>>
>>>>Look in Control Panel/Programs and Features to see if Microsoft .Net Framework 4.0 is installed. If not, google will point you to where you can download and install it.
>>>
>>>Here is what I see - do I need to download it?
>>>
>>>Thanks again.
>>
>>It looks like what I have. I haven't tried to install SQL 2012 though.
>>
>>There might be some issue with the 2012 installer.
>
>May be my problem is what I try to install from the media?
>
>Here is what I see in the log file
>

>03/27/2012 12:43:17.548 ======================================================================
>03/27/2012 12:43:17.550 Setup launched
>03/27/2012 12:43:17.553 Attempting to determine media source
>03/27/2012 12:43:17.554 Media source: E:\
>03/27/2012 12:43:17.555 Attempt to determine media layout based on file 'E:\mediainfo.xml'.
>03/27/2012 12:43:17.635 Media layout is detected as: Full
>03/27/2012 12:43:17.638 Setup.exe is running locally no check for a slip stream media
>03/27/2012 12:43:17.639 /? or /HELP or /ACTION=HELP specified: false
>03/27/2012 12:43:17.641 Help display: false
>03/27/2012 12:43:17.643 .Net version 3.5 is installed
>03/27/2012 12:43:17.644 .Net version 2.0 is installed
>03/27/2012 12:43:17.664 Strong name verification disabling is not required
>03/27/2012 12:43:17.666 /? or /HELP or /ACTION=HELP specified: false
>03/27/2012 12:43:17.669 Help display: false
>03/27/2012 12:43:17.672 Attempting to launch landing page workflow
>03/27/2012 12:43:17.673 Attempting to set setup mutex
>03/27/2012 12:43:17.675 Setup mutex has been set
>03/27/2012 12:43:17.676 Attempting to launch global rules workflow
>03/27/2012 12:43:17.677 Media source: E:\
>03/27/2012 12:43:17.682 Install media path: E:\x64\setup\
>03/27/2012 12:43:17.683 Media layout: Full

>
>So, it detects .NET 3.5. and .NET 2.0, but for some reason doesn't detect .NET 4.0. I think this is why it later asks for VS 2010, do you agree?

Why make the assumption that it has not detected .NET 4.0 ? All that it says is that it *did* detect 3.5 and 2.0.
What leads you to believe the problem is related to undetected .NET 4.0 - is the above the entire log ?
IAC, according to this : http://msdn.microsoft.com/en-us/library/ms143506(v=sql.110).aspx SQL2012 will install .NET 4.0 as a prerequisite if required.