I an trying to install Visual Studio 2015 community edition on Windows 7 64-bit.
For some reason, the installer says "Setup Blocked" with an error "This version of Visual Studio requires a computer with a newer version of Windows".
what should be done in order to install setup completely.
VS 2015 and VS 2013 Update 5 require Windows 7 Service Pack 1 or later.
Learn how to install Windows 7 Service Pack 1
Support for Windows 7 RTM ended on April 9, 2013.