Problem
If we want to open a client scope in Keycloak, we get the message “Network response was not OK”
See also the related bug which was fixed since errata 1028.
Solution
Go to User Federation → ldap-provider. In the section “LDAP searching and updating” edit the formerly empty field “User LDAP filter”: Add the filter (uid=*) and save:
You can also do that via the terminal:
univention-keycloak ldap-federation set --config customUserSearchFilter="(uid=*)"