So cool you found it interesting Jay! Alright this sounds like a common pip installation problem. In their documentation, Microsoft says that it requires python 3.8 or later:

"AutoGen requires Python version >= 3.8. It can be installed from pip:

pip install pyautogen"

I'd try also try: "pip uninstall autogen" and reinstall it.

If nothing goes right, specially on windows where there are many path bugs, I'd try running a local environment before starting the tutorial with python venv tool.

tell me if it worked!