Customers installing Visual Studio 2012 RTM on pre-release versions of Windows 8 or Windows Server 2012 may see the following error after launching the setup application:
The .Net Framework installed on this machine does not meet the minimum required version: 4.5.50709.
This is a blocking error and only allows the install to be canceled.
Visual Studio 2012 RTM is not supported on pre-release versions of Windows 8 or Windows Server 2012.
To install Visual Studio 2012 RTM, you will need to install it on Windows 7 SP1, Server 2008 R2 SP1, or install VS2012 RTM on Windows 8 or Server 2012 RTM. If you are an MSDN or TechNet subscriber, you can get Win8 now from the following links:
If you are not an MSDN or TechNet subscriber, you can download a 90-day evaluation of Windows 8 Enterprise to make sure your software or hardware is ready for the Windows 8 launch.
You may also continue to use pre-release versions of VS2012 on supported pre-release versions of Win8, such as VS2012 RC on the Win8 Release Preview (RP).
See the system requirements on the download page for Visual Studio 2012 for more information.