We have an app in production used by lots of users and have not made any changes to our Oauth 2.0 based Box support recently. However, users are no longer able to log in to box using our app and instead receive an invalid_client error.
As far as I can tell our Oauth 2.0 library is requesting authentication properly just as it has been doing for years. Would anyone have any advice for next steps to investigate and resolve this issue?
The error with the client id and state token redacted is:
- redirect_uri=boxsdk-[our client id]://boxsdkoauth2redirect
- state=[a state token]
- client_id=[our client id]