# Implementing User Authentication (Not App Authorization) with Existing Zoom App **URL:** \ **Category:** Meetings\ **Created:** [March 25, 2025, 6:28am UTC](https://devforum.zoom.us/t/implementing-user-authentication-not-app-authorization-with-existing-zoom-app/130461 "2025-03-25T06:28:19Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![theochan](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/theochan/32/59321_2.png) [@theochan](https://devforum.zoom.us/u/theochan)\ **Post date:** [March 27, 2025, 10:51pm UTC](https://devforum.zoom.us/t/implementing-user-authentication-not-app-authorization-with-existing-zoom-app/130461/3 "2025-03-27T22:51:43Z")
Thank you Elisa for your prompt reply I can only login with the zoom account that owns the app. If I try to login with other accounts, it shows “Application not found” as below. I tried many times when I put my app’s client ID and secret to OAuth information. It turns out ask me to approve the app with the app owner account. I believe I’ve done something wrong or misunderstanding the entire flow. Can you show me the correct procedures or any reference documentation for that? FYI: it is still in development phrase, does it matter? ![image](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/2/f/2fee205c2269d7f6f96e966ea2d0ca5a35e3cc99.png) Btw, in this [thread](https://devforum.zoom.us/t/connect-users-to-zoom-account/81329/5) it mentions that zoom app that are not published can only authorize the owner. Does that mean at development phrase I am not able to user other accounts for authentication, once published I will be able to do so? --- _[View the full topic](https://devforum.zoom.us/t/implementing-user-authentication-not-app-authorization-with-existing-zoom-app/130461)._