Angular SDK Update Error: "Unable to issue redirect for OAuth 2.0 transaction"

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Problem statement

An application that was built using @auth/auth-angular version 1.11.1 was recently updated to use the latest version of the SDK ( version 2.x.x ).

After upgrading the @auth0/angular dependency in the application, it appeared to successfully complete the first phase of authentication, using either the Auth0 database or social providers. However, the overall transaction failed to complete and the following error was observed:

server_error : Unable to issue redirect for OAuth 2.0 transaction

This failure mode also seems to generate a TIMEOUT error when trying to silently get an access token.

Symptoms

  • server_error : Unable to issue redirect for OAuth 2.0 transaction error

Cause

The failure may be due to missing or incorrect configuration items:

  • When configuring the auth0 client, it is now necessary to explicitly specify the Redirect URI. This was not required in older versions.
  • authorizationParams may be absent or incorrectly defined

Solution

Review the Migration guide, paying special attention to the section on authorizationParams.

Here is a sample code that illustrates this issue:

AuthModule.forRoot({
            cacheLocation: "localstorage",
            clientId: AG_OIDC_CLIENT_ID,
            domain: AG_OIDC_DOMAIN,
            httpInterceptor: {
                allowedList: [httpInterceptorPath],
            },
            useRefreshTokens: true,
            authorizationParams: {
                audience: AG_OIDC_AUDIENCE,
                redirect_uri:your_redirect_uri
            },
        }),

Note how it is a requirement to specify the Redirect URI and that failure to do so will result in an error being thrown.

Related References