We're sorry... Unexpected error when authenticating with identity provider

1

Hello,

I am attempting to migrate Keycloak from version 15 to version 25. While I can access the Keycloak GUI with my admin account without any issues, I encounter a problem when trying to log in to the application using users email. The error message displayed is “We’re sorry… Unexpected error when authenticating with identity provider.” I have tried various solutions found on Google, but none have been helpful. Any suggestions to resolve this issue would be greatly appreciated.

Thanks in advance!!!

2

What type of identity provider do you use? SAML or OpenID Connect? Do you have any error logs/events, stack traces, …?

3

Hello,

OpenID Connect. That the issue no logs!!!

4

When migrating from KC22 to KC23 I had such an issue with brokered SAML logins because of a change in the quarkus framework’s default behaviour. Creating a conf/quarkus.properties file and putting

quarkus.http.limits.max-form-attribute-size=2M

in it helped. But it was SAML where form post requests with many data is usual. As you are using OIDC I’m not sure it helps…

5

Thanks a lot! It’s not beneficial in my case.

6

You could open an issue here:

with precise description what’s you setup and the situation when the error occurrs.

7

Thank you for your support!!!

8

My suggestion is to have linear approach, to update from 15 to 16 then form 16 to 17 and so on …
Then you can follow Keycloak guideline:
https://www.keycloak.org/docs/latest/upgrading/index.html#migrating-to-16-0-0