VSCode Custom Extension: Seem not to work - visual-studio-code

Question

I'm currently trying to write an VS Code extension and it's a bit frustrating. I did everything as said here:
https://code.visualstudio.com/docs/extensions/example-hello-world
But after using yo code and entering all necessary information, I opened the respective folder VS Code hit F5 and VS Code says I should configure my launch.json (this should be done by yo code, shouldn't it?). However, when I press the debug start button, a extension-host window opens as described in that tutorial. BUT: When I try to execute the extension the command palette won't find it.
I tried several command names such as "hello world" "helloworld" or variants of the name of the extension that I gave in yo code. I also noticed the
"commands": [{
"command":"extension.sayHello",
"title":"Hello World"
}]
section of the package.json, but somehow I don't manage it to put it all together in order to get a simple, working vs code extension. In tutorial videos on youtube everyone can simply hit F5 after launching VS Code, what I cannot. Pretty weird somehow.
Any help is appreciated!
Thanks in advance.
EDIT: Additional information.
When I activated vs code to show all exceptions (even handled) vs code stops at the following point (see default:)
at internal/process/stdio.js (core module)
// ...
case 'PIPE':
case 'TCP':
var net = require('net');
stream = new net.Socket({
fd: fd,
readable: false,
writable: true
});
stream._type = 'pipe';
break;
default:
// VS CODE STOPS AT THE LINE FOLLOWING!
// Probably an error on in uv_guess_handle()
throw new Error('Implement me. Unknown stream file type!');
}
// Ignore stream errors.stream.on('error', function() {});
} catch (error) {
stream = createDevNull();
}
//...
Hopefully it helps :(

Answer 1

I solved my problem by reading the tutorial with more attention. The tutorial tells you to activate the command palette by Hitting F1 not CTRL P. This solved my Problem.
I did not change anything in the code; rather it seems to be important to hit F1 instad of [CTRL] + [P] despite it actually brings up the same input. I'm still wondering why to differenciate between CTRL + P and F1 if both bring up the same control. :/
Hope it helps other beginners, too.
cheers!

Answer 2

I had the same issue (though didn't debug to see if it failed on the same line) and I resolved it by restarting VSCode.