You cannot assign a ThinApp template to a desktop or pool.

View Administrator returns an assignment error when you attempt to assign a ThinApp template to a desktop or pool.

Either the ThinApp template contains an application that is already assigned to the desktop or pool, or the ThinApp template was previously assigned to the desktop or pool with a different installation type.

If the template contains a ThinApp application that is already assigned to the desktop or pool, create a new template that does not contain the application or edit the existing template and remove the application. Assign the new or modified template to the desktop or pool.

To change the installation type of a ThinApp application, you must remove the existing application assignment from the desktop or pool. After the ThinApp application is uninstalled, you can assign it to the desktop or pool with a different installation type.