I have a situation where login to an application fails with the error: "Unable to issue redirect for OAuth 2.0 transaction ".
This may happen with any type of connection that depends on OAuth 2.0 , such as a custom OAuth2 connection.
The error suggests that an OAuth2 transaction was initiated without a redirect URI so the authorization server was unable to then issue a redirect.
It commonly arises when there is some issue in the redirect_uri in the initial /authorize issued by the application. However, you should be alert to the possibility of other possible causes.
The error may be encountered either when using an Auth0 SDK / Quickstart or when developing custom code.
It could arise from a ‘typo’ in your code such as incorrect:
- Domain name
- Callback URL
- referring to redirectURL ( in this context, it should be redirect_uri , see https://www.oauth.com/oauth2-servers/redirect-uris/ and https://datatracker.ietf.org/doc/html/rfc6749 )
The solution will vary according to the root cause of the problem. Check the cause section.