Was Visual Studio the program that made Windows?

[Muz1234]

Is it? Or no?

 

[TGI-ECT]

You have a very interesting job in this Community, Muz1234. Very interesting.

The answer is 'No'.

 

[Muz1234]

So what was the program that made the GUI (Graphical User Interface)?

 

[bentenmusume]

Here is an answer from a Microsoft engineer on their official forums:

What Programming Language is Windows written in?

social.microsoft.com