LDAP Home Connector, no permission to upload and create files

Good day,

I am trying to configure the LDAP Home Connector App. But I am not able to get it working.
I it don't have any permission to upload or create files when I log in with an AD user. I followed this tutorial: https://doc.owncloud.org/server/10.0/admin_manual/enterprise/external_storage/ldap_home_connector_configuration.html

I am using the trial of owncloud enterprise on Ubuntu 16.04 to try the LDAP Home Connector in my test environment, and an ADDS server. All AD users are able to log in to owncloud using there AD credentials.

Does any body know what I have overlooked?

This is the error I have got:

Thank you in advance.