# "Invalid Token!" error message when trying to refresh oauth token **URL:** \ **Category:** API and Webhooks\ **Created:** [April 15, 2020, 5:58pm UTC](https://devforum.zoom.us/t/invalid-token-error-message-when-trying-to-refresh-oauth-token/13363 "2020-04-15T17:58:14Z")\ **Posts on this page:** 1\ **Showing post:** 108
**Author:** ![will.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/will.zoom/32/14417_2.png) [@will.zoom](https://devforum.zoom.us/u/will.zoom)\ **Post date:** [September 13, 2021, 12:28pm UTC](https://devforum.zoom.us/t/invalid-token-error-message-when-trying-to-refresh-oauth-token/13363/108 "2021-09-13T12:28:59Z")
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? > [@Timeout when refreshing access tokens](https://devforum.zoom.us/t/timeout-when-refreshing-access-tokens/51049/2): > > Hi @bo.zhang, Thanks for reaching out about this. This can happen for a few different reasons. These are the most common: If a new access token is generated, both the previous access token and refresh token will become invalid. So you will need to update each of these tokens each time you request a new access token. Another situation that can arise is if multiple requests are sent using the same refresh token within a short amount of time, a race condition may prevent all requests from go… Thanks! Will --- _[View the full topic](https://devforum.zoom.us/t/invalid-token-error-message-when-trying-to-refresh-oauth-token/13363)._