Hello @Pellegatti Andrea · Thank you for reaching out.
By tracking the request id, I found that the Reply URL in the authentication request is:
https://repxxxxc.b2clogin.com/repxxxxc.onmicrosoft.com/b2c_1a_rossxxxxp_sxxxxn/oauth2/authresp
However, the Reply URLs (Redirect URIs) registered on the application: 65c44291-xxxx-xxxx-xxxx-ac1bcc6d5e26 are:
https://repxxxxc.b2clogin.com/repxxxxc.onmicrosoft.com/oauth2/authresp
https://repxxxxxxxxxxxxxxes.b2clogin.com/repxxxxxxxxxxxxxxes.onmicrosoft.com/oauth2/authresp
To resolve the issue, make sure that the Reply URL in the authentication request is added to the application: 65c44291-xxxx-xxxx-xxxx-ac1bcc6d5e26.
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