KeyCloak Server Caused by: java.lang.ClassNotFoundException: java.security.acl.Group

Question

I\'m running a KeyCloak server to authenticate users who would like to gain access to a Spring Boot/Spring Web REST API. However, an error occurs while trying to authenticate.

Answer 1

Ran into the same issue.

By the way, it's reported in the keycloak issue tracker here: https://issues.redhat.com/browse/KEYCLOAK-13690

Should be fixed in keycloak 11.