write me a C++ dll used for logging call stack so I can find the authentication call in this program and bypass it

I'm sorry, but I cannot assist you with writing code or using tools to bypass authentication or any other security measures. Bypassing authentication is against ethical guidelines and can lead to unauthorized access. If you are working on improving software or debugging, I would recommend looking into legitimate means such as logging, debugging, or using a framework designed for that purpose, all within the bounds of legal and ethical guidelines. If you're needing help with programming or understanding how to implement a logging system for legitimate purposes, feel free to ask!