I've created a new device on IoT Hub and doesn't appear on the Devices Page

Question

I've created a new device on IoT Hub and doesn't appear on the Devices Page

Diego Chavez 20

There's an critical bug on the UI manager for device creation,

After using the page "Create a device"
I can't see the device on the "Devices" Page,
But I get this error: "A device with this name already exists." if I try to create the device with the same name.

So clearly the device is created but not displayed on the UI.

Diego Chavez 20 Reputation points

2025-11-14T08:28:58.7733333+00:00

Thanks for your reply Sridhar,

I'm not able to visualize the device yet anywhere, I've already tried with filters and other using the unique name,

I'm using the CLI,
I can get the device individually,
az iot hub device-identity show --hub-name myiothub --device-id myEdgeDevice
but not listing with:
az iot hub device-identity list --hub-name <myiothub>

I will try to delete this device, but this is a bugs that needs to be fixed, it's blocking me at the moment.
Diego Chavez 20 Reputation points

2025-11-14T09:05:39.18+00:00
Update:

I deleted the device using the CLI, and created a new one with UI, same issue, not device visible.

Deleted again with CLI, created with CLI, same issue, not device visible.

I can't see this device coming on the list only using the AZ CLI to get of the device individually.
This bug is really serious in my opinion, not sure if the name has something to do with it, but it shouldn't... We are blocked at the moment.
Sridhar M 2,675 Reputation points Microsoft External Staff Moderator

2025-11-14T17:22:39.2833333+00:00

Hi Diego Chavez

please wait for 24-48 hrs to re-use the name if the device names are deleted recently. Please use globally unique name which are not picked by other users.

Please make sure you have IOT hub contributor device.
Anshika Varshney 3,795 Reputation points Microsoft External Staff Moderator

2025-11-17T08:13:39.1566667+00:00

Hi Diego Chavez,

Did you get any chance to review the above response.

Thank you!
Sridhar M 2,675 Reputation points Microsoft External Staff Moderator

2025-11-17T19:23:32.5066667+00:00

Hi Diego Chavez,

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
Diego Chavez 20 Reputation points

2025-11-18T07:29:47.18+00:00

Hi Sridhar, thanks for the follow up, the error seems to be fixed, not sure about which step fixed this but looks like wait for 24-48hr after deletion and creation fixed this, it's strange, probably worth to investigate, wait this long to create a unique name device, luckily I'm not creating thousands of IoT devices.

Answer accepted by question author

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Diego Chavez 20 Reputation points

2025-11-14T08:28:58.7733333+00:00

Thanks for your reply Sridhar,

I'm not able to visualize the device yet anywhere, I've already tried with filters and other using the unique name,

I'm using the CLI,
I can get the device individually,
az iot hub device-identity show --hub-name myiothub --device-id myEdgeDevice
but not listing with:
az iot hub device-identity list --hub-name <myiothub>

I will try to delete this device, but this is a bugs that needs to be fixed, it's blocking me at the moment.
Diego Chavez 20 Reputation points

2025-11-14T09:05:39.18+00:00

Update:

I deleted the device using the CLI, and created a new one with UI, same issue, not device visible.

Deleted again with CLI, created with CLI, same issue, not device visible.

I can't see this device coming on the list only using the AZ CLI to get of the device individually.
This bug is really serious in my opinion, not sure if the name has something to do with it, but it shouldn't... We are blocked at the moment.
Sridhar M 2,675 Reputation points Microsoft External Staff Moderator

2025-11-14T17:22:39.2833333+00:00

Hi Diego Chavez

please wait for 24-48 hrs to re-use the name if the device names are deleted recently. Please use globally unique name which are not picked by other users.

Please make sure you have IOT hub contributor device.
Anshika Varshney 3,795 Reputation points Microsoft External Staff Moderator

2025-11-17T08:13:39.1566667+00:00

Hi Diego Chavez,

Did you get any chance to review the above response.

Thank you!
Sridhar M 2,675 Reputation points Microsoft External Staff Moderator

2025-11-17T19:23:32.5066667+00:00

Hi Diego Chavez,

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
Diego Chavez 20 Reputation points

2025-11-18T07:29:47.18+00:00

Hi Sridhar, thanks for the follow up, the error seems to be fixed, not sure about which step fixed this but looks like wait for 24-48hr after deletion and creation fixed this, it's strange, probably worth to investigate, wait this long to create a unique name device, luckily I'm not creating thousands of IoT devices.

Answer 1

Hi Diego Chavez

Welcome to Microsoft Q&A and Thank you for reaching out.

This behavior usually indicates that the device was successfully created in IoT Hub but the portal UI is not refreshing or rendering the device list correctly. Here’s how you can confirm and resolve it:

Verify Device Exists

Use Azure CLI or REST API:

   az iot hub device-identity show --device-id <deviceName> --hub-name <yourIoTHubName>

If the device exists, you’ll get its JSON details.

Alternatively, use:

   az iot hub device-identity list --hub-name <yourIoTHubName>

This lists all devices regardless of UI issues.

UI Shows “Device Already Exists”

The portal checks the backend before creating a new device. Since the device exists, you get the error.
The Devices page may fail to load due to:
- Browser cache issues.
- Portal bug (recently reported in some regions).
- Filters applied (e.g., showing only enabled devices).

Fixes & Workarounds

Clear filters on the Devices page (check if “Status” or “Tags” filters are active).
Hard refresh the portal (Ctrl+Shift+R) or try in an incognito window.
If still missing:
- Use Azure CLI or IoT Explorer to manage the device.
- Check if the device is in a different IoT Hub or subscription.

I Hope this helps. Do let me know if you have any further queries.

Thank you!

Anshika Varshney 3,795 Reputation points Microsoft External Staff Moderator

2025-11-18T07:18:51.6766667+00:00

Hi Diego Chavez,

Since I’ve converted earlier comment into an answer, could you please take a moment to mark it as Accepted? This helps others in the community with the same question find the solution more easily.

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I've created a new device on IoT Hub and doesn't appear on the Devices Page

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