Errors in C++ Hello World program

Question

Installed c++ in visual studio 2019 some time ago and it worked perfectly. Today when I launched I got 490 errors. This is a screenshot of what a Hello World looks like: https://imgur.com/yxIs9Np

I am completely new to c++ so I dont know whats wrong, I have tried to search for the error but I could not find anything. I have tried to reinstall c++ in vs and updated vs to the newest version.

code:

#include <iostream> 
int main() { 
std::cout << "Hello World!\n"; 
}

its nothing wrong with the code, I think something is wrong with the librarys. For some reason I get 17 errors " cannot open file "[Some name].h" "

Answer 1

Reinstalled visual studio, this worked. The problem was that it dident include C:\Program Files (x86)\Windows Kits\10