# 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:** 4

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**Author:** ![zac1](https://avatars.discourse-cdn.com/v4/letter/z/a3d4f5/32.png) [@zac1](https://devforum.zoom.us/u/zac1)\
**Post date:** [April 1, 2022, 2:21pm UTC](https://devforum.zoom.us/t/invalid-grant-exception-while-refreshing-a-token/65154/4 "2022-04-01T14:21:42Z")

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Figured it out, the refresh token is one time use, after using it to fetch access token once, the refresh token will be returned as well as the new refresh token.

> [@"Invalid Token!" error message when trying to refresh oauth token](https://devforum.zoom.us/t/invalid-token-error-message-when-trying-to-refresh-oauth-token/13363/108):
>
> Hi @kkoellner, These types of errors could happen for a few different reasons. Can you see my post here and let me know if any of these might be the case? Thanks! Will

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