# Invalid access token - Server-to-Server OAuth **URL:** \ **Category:** Authentication\ **Created:** [September 23, 2022, 1:23am UTC](https://devforum.zoom.us/t/invalid-access-token-server-to-server-oauth/76424 "2022-09-23T01:23:44Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\ **Post date:** [September 26, 2022, 2:32pm UTC](https://devforum.zoom.us/t/invalid-access-token-server-to-server-oauth/76424/2 "2022-09-26T14:32:48Z")
Hi @r3c Thanks for reaching out to the Zoom Developer Forum, I am happy to help here! Could you please share with me how are you requesting the access token? Here is a very helpful post that I have create that might help you troubleshoot your issue: > [@How to user Server-to-Sever OAuth app with Postman](https://devforum.zoom.us/t/how-to-user-server-to-sever-oauth-app-with-postman/70848): > > How to use our Server-to-Server OAuth with Postman? As some of you might be aware of, our JWT app is being deprecated by June 2023 and we encourage you to migrate to the newly introduced [Server-to-Server OAuth App](https://marketplace.zoom.us/docs/guides/build/server-to-server-oauth-app) That being said, here is a quick and simple guide on how to use or new app with Postman As stated in our documentation here: This new app type facilitates OAuth-authenticated requests between servers without end-user involvement. And this grant type enable your private server a… Best, Elisa --- _[View the full topic](https://devforum.zoom.us/t/invalid-access-token-server-to-server-oauth/76424)._