Default C# editor has changes to Visual Studio 2013

Hi all,

I have Visual Studio 2013 installed and that is my defual program for opening .cs files in Windows 8.

now whenever I click on a .cs file from inside the Unity, it opens VS instead of Monodevelop.

How can I bring the built-in Monodevelop back ?

By the way, I did try (Preferences → External Sources → ticking built-in Monodevelop) but I has no effect !

manual page for visual studio integration

If Visual Studio 2013 isn’t in the Preferences → External Tools menu, just select the browse button, and point it to the Visual Studio .exe.

In Unity go Edit->Preferences->External Tools and select what you want to use.

Worked for me. But Windows 7