# Invalid auth token **URL:** \ **Category:** Authentication\ **Tags:** api\ **Created:** [September 20, 2023, 2:35pm UTC](https://devforum.zoom.us/t/invalid-auth-token/95452 "2023-09-20T14:35:46Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Rithanya](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rithanya/32/52223_2.png) [@Rithanya](https://devforum.zoom.us/u/Rithanya)\ **Post date:** [September 20, 2023, 2:35pm UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/1 "2023-09-20T14:35:46Z")
We are having an issue while creating a meeting with Zoom. We get this error: Failed due to error: Fetching tokens failed with error: {"reason"=\>"Invalid Token!", "error"=\>"invalid\_grant"}" When checking about this in devforum, came across this issue [Frequently receiving invalid\_request / token revocation from Zoom - #12 by will.zoom](https://devforum.zoom.us/t/frequently-receiving-invalid-request-token-revocation-from-zoom/44220/12), were it was suggested that Zoom will work to allow simultaneously use multiple access tokens, Is this done? I still see errors related to multiple sign ups ---
**Author:** ![chunsiong.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/chunsiong.zoom/32/35488_2.png) [@chunsiong.zoom](https://devforum.zoom.us/u/chunsiong.zoom)\ **Post date:** [September 21, 2023, 3:01am UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/2 "2023-09-21T03:01:01Z")
@Rithanya , do you have a code sample? Do note that in the oauth 2.0 flow, the ?code in the redirect query string can only be used once. ---
**Author:** ![Rithanya](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rithanya/32/52223_2.png) [@Rithanya](https://devforum.zoom.us/u/Rithanya)\ **Post date:** [September 21, 2023, 11:17am UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/3 "2023-09-21T11:17:09Z")
More info: This issue is raised when we try to refresh the access token with the existing refresh token. The refresh token is invalidated somehow. @chunsiong.zoom , can you share a mailid to share the code samples? Thanks! ---
**Author:** ![chunsiong.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/chunsiong.zoom/32/35488_2.png) [@chunsiong.zoom](https://devforum.zoom.us/u/chunsiong.zoom)\ **Post date:** [September 21, 2023, 1:06pm UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/4 "2023-09-21T13:06:11Z")
@Rithanya , what language are you using? ---
**Author:** ![Rithanya](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rithanya/32/52223_2.png) [@Rithanya](https://devforum.zoom.us/u/Rithanya)\ **Post date:** [September 21, 2023, 2:04pm UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/5 "2023-09-21T14:04:03Z")
We are using Ruby @chunsiong.zoom ---
**Author:** ![joshua.allen](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/joshua.allen/32/51545_2.png) [@joshua.allen](https://devforum.zoom.us/u/joshua.allen)\ **Post date:** [September 22, 2023, 2:20pm UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/6 "2023-09-22T14:20:11Z")
Are you getting the new access token and refresh token the first time the refresh token is used or is the refresh token not working at all? ---
**Author:** ![chunsiong.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/chunsiong.zoom/32/35488_2.png) [@chunsiong.zoom](https://devforum.zoom.us/u/chunsiong.zoom)\ **Post date:** [September 25, 2023, 3:45am UTC](https://devforum.zoom.us/t/invalid-auth-token/95452/7 "2023-09-25T03:45:53Z")
@Rithanya I do not have a sample code in ruby, but I do have them in php, python and nodejs. Would any of these help? Let me know and I can share it here