Enabling on-demand application generation
On-demand application generation is controlled by the On-Demand App Service. Tenant admins can enable the On-Demand App Service in the Administration activity center, on the Settings page. The service is disabled by default and must be enabled before selection and template applications can be linked and on-demand applications generated.
When the service is switched from enabled to disabled, any pending requests to generate on-demand applications are allowed to finish. But once the service has been disabled, no new requests to generate applications will be accepted nor will developers be able to create or edit new On-demand application navigation links. These capabilities are restored once the service is re-enabled.