Zoom Apps Configuration React with Backend Service ZoomSdk version 16.5 installed via npm GitHub - zoom/appssdk: Build Apps that run in the Zoom Client Description I am working on implementing in-client auth and am able to successfully receive a response and code from the zoomSdk.authorize and z…

Welp. It appears like something is amiss with the developer docs. The docs say that SHA256 is the only challenge method that’s supported. However, when I generated using PLAIN (no sha256 encoding, the challenge and the verifier are the same string), I was able to successfully complete the auth flow…

@brad.bicknell My apologies for the delay getting back to you. You should indeed be able to use SHA256 encoding for your challenge method. Are you seeing this same behavior outside of the client or only when using in-client authorization? With in-client authorization, you should be using the author…

Hi @MaxM , We are only using the PCKE method in in-client authorization. I’m not sure what you mean when you say that the authorize() function doesn’t have a challenge method parameter. The api docs have it listed as a required parameter Zoom Apps JS SDK reference codeChallenge as well as the exampl…

In-client auth - Invalid authorization code

Zoom Apps

ash.provost (Ash) October 26, 2022, 11:27pm 6

See here: Unable to exchange token during in-client oauth flow (and other issues) - #10 by ash.provost

Topic		Replies	Views
In-client OAuth has stopped working Zoom Apps	1	80	April 25, 2025
PKCE does not work but is obligatory while using sdk v0.16.x Zoom Apps oauth	13	1280	October 13, 2022
Zoom appssdk Authorization ({"reason":"Invalid authorization code","error":"invalid_grant"}) Zoom Apps sdk , apps	8	92	October 7, 2025
In-client OAuth + PKCE: Always getting invalid_grant (“Invalid authorization code”) API and Webhooks	0	29	December 4, 2025
URGENT ### {“reason”:”Invalid authorization code ***”,”error”:”invalid_grant”} Zoom Apps	4	619	April 23, 2024

In-client auth - Invalid authorization code

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