"Connection failed" or "Connection Error" message on DH (DeviceHub) system tray icon in PitneyShip, PitneyShip Pro, or PitneyShip Enterprise

Issue

The DeviceHub "DH" system tray icon shows a red exclamation point icon with the message "Connection failed", and when you click on the icon, it says "Connection Error: Click Reconnect from menu below".
          

Cause

MQTT connections on port 443/8883 to devicehub.pitneybowes.com are not allowed.

Resolution

• Solution 1: Check the DeviceHub Networking Requirements
• Solution 2: Manually activate DeviceHub

Solution 1: Check the DeviceHub Networking Requirements

Make sure that all of the DeviceHub Networking Requirements are met. Contact your IT department for assistance if needed.

• DeviceHub Networking Requirements and Technical Specifications

Solution 2: Manually activate DeviceHub

Try manually activating DeviceHub:

1. Select Settings > My Devices..
2. Select Activate DeviceHub.