Complete newbie here - I ask for your forgiveness.
I am using UCS to deploy an in-house ESX-based Nextcloud instance.
Deployed the VM - connected to our Windows AD - everything went smoothly. I can login to the univention portal as well as SSH to the appliance using the domain admin credentials. BUT… I can not use those credentials to log into NextCloud - normal user credentials are recognised but not the Administrator + domain password.
What (probably basic) step did I miss ?