Device Provisioning Service can't validate certificates
Hi,
I have several devices that were successfully reporting to an instance of Azure IoT Hub. They are provisioned using X.509 certificate attestation in the Device Provisioning Service (DPS).
A few days ago, the IoT Hub stopped receiving messages from the devices, and at the same time, the number of attestation attempts in the DPS scaled from being 0 for almost all of the time, to being constantly non-zero:
I have also observed that the documentation on X.509 certificate attestation was updated recently. I want to ask: has anything changed in the DPS attestation chain that could have impacted my architecture?
Thank you very much in advance.