Cosafe Warning System (CWS) is a program that is downloaded to PC/Mac and enables the user to receive alarms from Cosafe on their computer screen.

Alarms sent in Cosafe are automatically synchronized with CWS when the program is installed on your PC/Mac. CWS is activated when an alarm goes off and a clear notice appears on the computer screen at the same time as the computer emits a distinct sound signal.

The link in the alarm message takes the user to the Cosafe web app where more information is available.

CWS is a stand-alone computer program that can be downloaded from the Microsoft Store and the App Store. If you want to download CWS directly to your PC (Windows), you can download the program (.exe format) at the following link.

Does CWS not work on a computer? Here's how to find the error

  1. Uninstall and reinstall Cosafe Warning System

  2. Check your computer's sound settings to make sure everything is ok

    1. Turn on the computer's sound volume (Cosafe cannot go through manually turned down volume on PC/Mac)

    2. Turn off any "mute" mode

If this does not work contact your local IT department and see if they have internal blocks for external programs. Some may also need to make settings in port 5228.

How CWS connection to server works (for you who are IT technicians)

CWS makes a connection to Firebase Cloud Messaging to port 5228 using XMPP protocol and keeps connection open to receive incoming messages (push messages). It uses the same system as push notifications on Android. If outgoing connections to port 5228 are blocked, the desktop app cannot get the push token and receive messages.

The data sent with the notification is the same information that can be seen in the Cosafe mobile app when notifications are received. Android uses port 5229 or 5230 if port 5228 is blocked, but the desktop app only uses port 5228.

If all three of these ports are blocked, apps using Firebase Cloud Messaging should not be able to send push notifications to Android devices on that network.

ATTENTION! If CWS already works for the majority of your users, the port is probably not a problem.

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