“ Hello world！”冻结在c ++中

Question

I tried to compile a simple Hello World in C++ to test that my Visual Studio 2013 on my Windows 10 works well but I've a problem. My program compile but when I run, it freeze. It's an empty Win32 Console Application with a "main.cpp" :

#include <iostream>
using namespace std;

int main()
{
    cout << "Hello world!";
    return 0;
}

• If I launch it from Visual Studio in debug (with "Run"), Visual Studio freeze and I need to kill its task.
• If I launch it with the executable or with "Run without Debugging", nothing appear, "System" process doesn't want to free the execution and I can't recompile without restart the computer because of that.

I am confused. If somebody have an idea of what's happening, please help me.

Update 1 : I repair my installation. Same problem. Breakpoint doesn't help. It seems to freeze before. And also no trace of a task in the task manager when launched without debugging.

Answer 1

It was my antivirus' fault (in my case, Avast). I made it ignore my Visual Studio projects and it works. Solved by @Blastfurnace.