An Azure service that enables bidirectional communication between internet of things (IoT) devices and applications.
Hi minew,
This usually happens when the IoT Hub is already busy with another update in the background. Azure doesn’t allow multiple updates at the same time, so it just blocks the new request with that error.Even if you don’t see anything running, something might still be processing or stuck. I’ve seen this happen when changes are triggered back-to-back.Best thing to do is wait for a few minutes (5–10 mins) and try again. Most of the time it clears on its own.If it still keeps failing, try refreshing the portal or retry from CLI once.And if nothing works, raise a support ticket with that correlation ID — they can check what’s stuck behind the scenes.
Thanks & Regards,
Saravanan Ganesan