# "Invalid client\_id or client\_secret"

**URL:** <https://devforum.zoom.us/t/invalid-client-id-or-client-secret/5252>\
**Category:** API and Webhooks\
**Created:** [July 30, 2019, 8:05am UTC](https://devforum.zoom.us/t/invalid-client-id-or-client-secret/5252 "2019-07-30T08:05:41Z")\
**Posts on this page:** 1\
**Showing post:** 4

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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:** [July 30, 2019, 4:46pm UTC](https://devforum.zoom.us/t/invalid-client-id-or-client-secret/5252/4 "2019-07-30T16:46:08Z")

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Hey @abhilash,

Did you include the required [Authorization header](https://marketplace.zoom.us/docs/guides/authorization/oauth/oauth-with-zoom#request-access-token) in your request?

`"Authorization": "Basic base64Encode(Client_Id:Client_Secret)"`

([You can base64encode them here.](https://www.base64encode.org/) Make sure to include the `:` in between your client\_id and client\_secret)

It will look something like this  
`"Authorization": "Basic YXNkZmFzZGZha3M6YWRramZiYXNrbGRqZmFzZGY="`

Also, you need to change `redirection_uri` to `redirect_uri`.

Let me know if this works!

Thanks,  
Tommy

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