Device is Offline

What is causing this Error?

The device has lost connectivity to the Shift4 platform. This is typically due to a dropped Wi-Fi or cellular connection, or a firewall blocking required Shift4 endpoints.

How do I resolve this Error?

If the Shift4 Gateway shows as unreachable in the connectivity check:

1. Confirm the device is connected to Wi-Fi or has a cellular signal.
2. Confirm your network meets the firewall requirements in Network Requirements.
3. If the device cannot reconnect, contact Shift4 Support.

While offline, the device may continue to process transactions using the offline payments feature (if enabled). 

Note: For cloud integrations, offline payments only work if the payment request can still reach the device over the local network. If the local network itself is down, requests from the POS will generally not reach the device at all. For more information, visit the Understand Offline Stand-in for Commerce Engine article.