Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
This article describes the causes and solutions for 404001 DeviceNotFound errors.
Symptoms
During a cloud-to-device (C2D) communication, such as C2D message, twin update, or direct method, the operation fails with error 404001 DeviceNotFound.
Cause
The operation failed because the device cannot be found by IoT Hub. The device is either not registered or disabled.
Solution
Register the device ID that you used, then try again.