# Invalid\_grant exception while refreshing a token

**URL:** <https://devforum.zoom.us/t/invalid-grant-exception-while-refreshing-a-token/65154>\
**Category:** API and Webhooks\
**Created:** [March 3, 2022, 6:37am UTC](https://devforum.zoom.us/t/invalid-grant-exception-while-refreshing-a-token/65154 "2022-03-03T06:37:20Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![donte.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/donte.zoom/32/24412_2.png) [@donte.zoom](https://devforum.zoom.us/u/donte.zoom)\
**Post date:** [April 21, 2022, 9:26am UTC](https://devforum.zoom.us/t/invalid-grant-exception-while-refreshing-a-token/65154/5 "2022-04-21T09:26:43Z")

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Glad to hear you were able to resolve this and you found that [post](https://devforum.zoom.us/t/invalid-token-error-message-when-trying-to-refresh-oauth-token/13363/108) useful. You are correct! While a refresh token is valid for 15 years, it can only be used once. I’ve linked our help documentation below for reference:

## [Refreshing an Access Token](https://marketplace.zoom.us/docs/guides/auth/oauth/#refreshing-an-access-token)

 ![Screen Shot 2022-04-21 at 5.25.27 AM](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/1/2/12e729d0a7724204df34d7b626d2f3dee312cc80.png)

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_[View the full topic](https://devforum.zoom.us/t/invalid-grant-exception-while-refreshing-a-token/65154)._