Last Updated on April 16, 2026
COS consists of four services: Content Hosting, Content Management, Relay, and Restricted Proxy.
These services execute in the background, and start automatically after installation and whenever the COS – Service Device (COS – SD) is booted. In addition, administrators can start and stop these services manually. Technology Coordinators should be familiar with the process of starting and stopping these services.
Windows
On a Windows COS – SD, perform the following steps:
- Select Control Panel–Administrative Tools–Services.
- Select a service—CentralOfficeContentHost, CentralOfficeContentManagement, CentralOfficeRelay, or CentralOfficeRestictedProxy—right-click and select Start (to start) or Stop (to stop) the service.
Mac (OS X and macOS)
On a Mac COS – SD, the COS services execute in the background without a standard graphical window (each service name is prefixed with com.datarecognitioncorp). A Mac administrator uses the launchd and launchctl commands in the terminal to manage these services.
Linux
A Linux administrator uses the following commands on a Linux COS – SD in terminal mode to start or stop the COS services:
service centralofficecontenthosting start
service centralofficemanagement start
service centralofficerelay start
service centralofficerestrictedproxy start
service centralofficecontenthosting stop
service centralofficemanagement stop
service centralofficerelay stop
service centralofficerestrictedproxy stop