NRF9160 Azure IoT hub DPS Certification Connection Rejected

Question

Hi Nordic

Sample: asset_tracker_v2 (with only changes to overlay-azure.conf)
SDK: 2.5.2
Modem FW: nrf9160_1.3.5

I have followed this tutorial https://learn.microsoft.com/en-us/azure/iot-dps/tutorial-custom-hsm-enrollment-group-x509?tabs=windows&pivots=programming-language-ansi-c for getting my device connected to IOT Hub via DPS. Which I have followed and re-tried many times.

On Azure, in my DPS Certificates, I've uploaded azure-iot-test-only.root.ca.cert.pem, per tutorial.
And in my Managed Enrollments, I've added an Enrollment Group with the azure-iot-test-only.intermediate.cert.pem, per tutorial.

But, I am struggling with the certification and getting a valid connection.

The error that keeps persisting is:

[00:00:15.799,896] <err> azure_iot_hub_dps: Connection was rejected with return code 5
[00:00:15.799,926] <wrn> azure_iot_hub_dps: Is the device certificate valid?
[00:00:15.799,987] <err> mqtt_helper: Library is in the wrong state (MQTT_STATE_DISCONNECTED), MQTT_STATE_CONNECTED required
[00:00:15.800,018] <err> azure_iot_hub_dps: Failed to disconnect gracefully, error: -95
[00:00:15.800,048] <err> azure_iot_hub_dps: There was a failure during DPS registration, process is stopped
[00:00:15.801,086] <err> mqtt_helper: Cloud MQTT input error: -111

Here is what I have successfully uploaded to the modem:

And my overlay-azure.conf looks like:

CONFIG_AZURE_IOT_HUB=y
CONFIG_AZURE_IOT_HUB_DPS=y
CONFIG_AZURE_IOT_HUB_AUTO_DEVICE_TWIN_REQUEST=y

# Increase the number of maximum message properties that can be parsed by the Azure IoT Hub library.
# Needed to be able to parse P-GPS responses.
CONFIG_AZURE_IOT_HUB_MSG_PROPERTY_RECV_MAX_COUNT=4

# Azure IoT Hub options that must be configured in order to establish a connection.
CONFIG_AZURE_IOT_HUB_DPS_HOSTNAME="global.azure-devices-provisioning.net"
CONFIG_AZURE_IOT_HUB_DPS_ID_SCOPE="0ne********" # Stars replaces with my ID scope

# MQTT helper library
CONFIG_MQTT_HELPER_RX_TX_BUFFER_SIZE=2048
CONFIG_MQTT_HELPER_STACK_SIZE=4096
CONFIG_MQTT_HELPER_SEC_TAG=11

# MQTT Transport library
# Maximum specified MQTT keepalive timeout for Azure IoT Hub is 1177 seconds.
CONFIG_MQTT_KEEPALIVE=1177

The full trace is:

*** Booting nRF Connect SDK v2.5.2 ***
[00:00:00.257,446] <inf> app_event_manager: APP_EVT_START
[00:00:00.506,896] <inf> app_event_manager: MODEM_EVT_INITIALIZED
[00:00:00.516,571] <inf> azure_fota: Current firmware version: 0.0.0-development
[00:00:00.570,159] <inf> app_event_manager: MODEM_EVT_LTE_CONNECTING
[00:00:01.293,548] <inf> app_event_manager: DATA_EVT_CONFIG_INIT
%CESQ: 48,2,10,1
+CEREG: 2,"AEFE","005C4C16",7
[00:00:02.401,519] <inf> app_event_manager: MODEM_EVT_LTE_CELL_UPDATE
+CSCON: 1
+CGEV: ME PDN ACT 0,0
[00:00:03.967,681] <inf> app_event_manager: MODEM_EVT_LTE_CONNECTED
[00:00:03.968,902] <inf> app_event_manager: CLOUD_EVT_CONNECTING
+CNEC_ESM: 50,0
%MDMEV: SEARCH STATUS 2
+CEREG: 5,"AEFE","005C4C16",7,,,"00001010","11000001"
%XTIME: "0A","4220328121620A","00"
[00:00:04.073,364] <inf> app_event_manager: MODEM_EVT_LTE_PSM_UPDATE
[00:00:04.073,913] <inf> app_event_manager: DATA_EVT_DATE_TIME_OBTAINED
%CESQ: 47,2,5,0
%CESQ: 47,2,10,1
+CSCON: 0
+CSCON: 1
[00:00:17.401,397] <err> azure_iot_hub_dps: Connection was rejected with return code 5
[00:00:17.401,397] <wrn> azure_iot_hub_dps: Is the device certificate valid?
[00:00:17.401,458] <err> mqtt_helper: Library is in the wrong state (MQTT_STATE_DISCONNECTED), MQTT_STATE_CONNECTED required
[00:00:17.401,489] <err> azure_iot_hub_dps: Failed to disconnect gracefully, error: -95
[00:00:17.401,519] <err> azure_iot_hub_dps: There was a failure during DPS registration, process is stopped
[00:00:17.402,832] <err> mqtt_helper: Cloud MQTT input error: -111
+CSCON: 0
%CESQ: 46,2,4,0
%CESQ: 255,0,255,0

Hope you can help.

Thank you!
-Jeremy