# Refresh token request failing with 401

**URL:** <https://devforum.zoom.us/t/refresh-token-request-failing-with-401/6447>\
**Category:** API and Webhooks\
**Created:** [October 29, 2019, 6:21pm UTC](https://devforum.zoom.us/t/refresh-token-request-failing-with-401/6447 "2019-10-29T18:21:43Z")\
**Posts on this page:** 1\
**Showing post:** 82

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [May 21, 2020, 11:24pm UTC](https://devforum.zoom.us/t/refresh-token-request-failing-with-401/6447/82 "2020-05-21T23:24:18Z")

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For others reference, here is the solution to @picktime’s issue:

> [@"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/13363/40):
>
> Happy to help @picktime! In case this can help others, Picktime’s issue was an empty space in the [authorize url](https://marketplace.zoom.us/docs/guides/auth/oauth#step-1-request-user-authorization) between the client\_id and redirect\_url query param: https://zoom.us/oauth/authorize?response\_type=code&client\_id={client\_id} &redirect\_uri={redirect\_url} -Tommy

Thanks,  
Tommy

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