-To mitigate 500xxx errors, issue a retry from the device. To [automatically manage retries](./iot-hub-reliability-features-in-sdks.md#connection-and-retry), make sure you use the latest version of the [Azure IoT SDKs](./iot-hub-devguide-sdks.md). For best practice on transient fault handling and retries, see [Transient fault handling](https://docs.microsoft.com/azure/architecture/best-practices/transient-faults). If the problem persists, check [Resource Health](./iot-hub-monitor-resource-health.md#use-azure-resource-health) and [Azure Status](https://azure.microsoft.com/status/history/) to see if IoT Hub has a known problem. You can also use the [manual failover feature](./tutorial-manual-failover.md). If there are no known problems and the issue continues, [contact support](https://azure.microsoft.com/support/options/) for further investigation.
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