The RabbitMQ user used for the communication between NPrinting and its database hadn't been created during the installation process. To fix this problem we first need to check the permission with this command rabbitmqctl.bat list_permissions in the rabbitMQ Comand line We then created the user with those commands: rabbitmqctl.bat add_user remote remote rabbitmqctl.bat set_permissions remote ".*" ".*" ".*" After those steps we started the Scheduler successfully.
@Bastien Laugiero (QlikTech)