Microsoft .NET Framework 4.0 Beta 1 should be removed before upgrading to Windows 7
If you have been beta testing Microsoft .NET Framework 4.0 Beta 1 , we recommend you install a fresh copy of Windows 7 on your machine. Alternatively, you may also choose to uninstall Visual Studio 2010 Beta 1 and .NET 4.0 Beta 1 prior to upgrading to Win7. Microsoft Windows 7 is available to MSDN and TechNet subscribers .
Originally posted here:
Microsoft .NET Framework 4.0 Beta 1 should be removed before upgrading to Windows 7
