Below is a clip from keycloak.log: 2022-06-29 10:19:07,007-05 WARN [org.keycloak.events] (default task-1) [] type=LOGIN_ERROR, realmId=0dd6bd82-1891-4dd9-b3bd-9d06b10de669, clientId=ovirt-engine-internal, userId=null, ipAddress=10.1.1.243, error=user_not_found, auth_method=openid-connect, auth_type=code, redirect_uri=https://ovirtmgmt.mycompany.com/ovirt-engine-grafana/login/generic_oauth, code_id=3604ab03-f6ac-4c37-bc09-7b9134fab738, username=admin, authSessionParentId=3604ab03-f6ac-4c37-bc09-7b9134fab738, authSessionTabId=aFumUTpYJd And another one: 2022-06-29 10:07:54,551-05 WARN [org.keycloak.events] (default task-1) [] type=LOGIN_ERROR, realmId=0dd6bd82-1891-4dd9-b3bd-9d06b10de669, clientId=ovirt-engine-internal, userId=null, ipAddress=10.1.1.243, error=user_not_found, auth_method=openid-connect, redirect_uri=https://ovirtmgmt.mycompany.com/ovirt-engine/callback, code_id=3604ab03-f6ac-4c37-bc09-7b9134fab738, username=admin, authSessionParentId=3604ab03-f6ac-4c37-bc09-7b9134fab738, authSessionTabId=xAhvvzLK6ZE