# Invalid Access Token Problem

**URL:** <https://devforum.zoom.us/t/invalid-access-token-problem/77422>\
**Category:** API and Webhooks\
**Tags:** api-requests\
**Created:** [October 14, 2022, 6:37pm UTC](https://devforum.zoom.us/t/invalid-access-token-problem/77422 "2022-10-14T18:37:14Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![rarev](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rarev/32/38939_2.png) [@rarev](https://devforum.zoom.us/u/rarev)\
**Post date:** [October 17, 2022, 6:10pm UTC](https://devforum.zoom.us/t/invalid-access-token-problem/77422/2 "2022-10-17T18:10:05Z")

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Hi @nasirshahrst ,

I would suggest going through the oauth flow once more to request a new token, Oauth tokens expire after one hour and a new token would need to be requested using the refresh token. However I would suggest re-authorizing completely instead of using the refresh token. We have some steps you can follow [here](https://devforum.zoom.us/t/guide-making-a-zoom-api-call-with-oauth-credentials-in-postman/64538).

Let us know if you have any questions.

Regards,

Ron

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