Failed to delete Virtual Networks due to usage of Azure IPAM

Question

Failed to delete Virtual Networks due to usage of Azure IPAM

Wilfried Woivré 6 MVP

Hello,

I tried few month ago Azure IPAM on my subscription.

I want to delete my poc, and when i tried to delete virtual network associeted to the ipam an error occurred with error code ResourceOperationFailure.

When i refer to this case, i have similar issue : https://learn.microsoft.com/en-us/answers/questions/2223835/network-manager-ipam-failed-to-fetch-usage-data-er?WT.mc_id=AZ-MVP-4039694&source=docs

I tri

Please help me to delete the virtual network and the IPAM.

Regards,

Wilfried Woivré 6 Reputation points MVP

2025-05-15T10:05:09.6933333+00:00

Hello,

Yes my vnet doesn't have any ressources inside like VM or other.

I tried all the steps in the specified article, and the troubleshoot for the vnet.

see the deletion of the Virtual Network :

And when i tried to deassociate the existing virtual network:

Regards
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-15T11:23:04.6366667+00:00

Hi @Wilfried Woivré

Thanks for the response and sharing the screenshots.

Can you please share the additional information that was requested over private messages.

Thank you,
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-16T14:56:30.8266667+00:00

Hi @Wilfried Woivré

Thank you for sharing all the information.

We have engaged the Azure Engineering team to clean up the resources from the backend.

We will keep you updated once we receive a response from the PG team.
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-19T08:40:46.2633333+00:00

Hi @Wilfried Woivré

Just wanted to update you that PG has gotten involved and started working on your issue.

We will keep you posted. Thank you.
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-21T08:37:04.2166667+00:00

Hi @Wilfried Woivré

It's taking longer than usual. However, I wanted to update you that multiple Azure engineering teams are involved and proactively working on your issue. We will keep you posted. Thank you.
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-06-03T08:56:00.5566667+00:00

Hi @Wilfried Woivré

Azure product team has removed the VNet dependencies from the backend.

Could you please try to delete the VNet and let me know if you still encounter any issues?
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-06-04T08:44:36.5933333+00:00

Hi @Wilfried Woivré

Did you had a chance to try on deleting the VNet from your side and let me know if still you face any issues while deleting the resources.

thanks,
Wilfried Woivré 6 Reputation points MVP

2025-06-04T10:02:23.51+00:00

Hello,

Yes i try it, and it's good now. Thank you.

Is it a transient error ? Can i try IPAM stuff now without issue ?
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-06-05T10:02:21.8533333+00:00

Hi Wilfried Woivré

Thanks for the response.

Yes, you can try now and let me know how it goes.

1 answer

Your answer

Wilfried Woivré 6 Reputation points MVP

2025-05-15T10:05:09.6933333+00:00

Hello,

Yes my vnet doesn't have any ressources inside like VM or other.

I tried all the steps in the specified article, and the troubleshoot for the vnet.

see the deletion of the Virtual Network :

And when i tried to deassociate the existing virtual network:

Regards
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-15T11:23:04.6366667+00:00

Hi @Wilfried Woivré

Thanks for the response and sharing the screenshots.

Can you please share the additional information that was requested over private messages.

Thank you,
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-16T14:56:30.8266667+00:00

Hi @Wilfried Woivré

Thank you for sharing all the information.

We have engaged the Azure Engineering team to clean up the resources from the backend.

We will keep you updated once we receive a response from the PG team.
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-19T08:40:46.2633333+00:00

Hi @Wilfried Woivré

Just wanted to update you that PG has gotten involved and started working on your issue.

We will keep you posted. Thank you.
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-05-21T08:37:04.2166667+00:00

Hi @Wilfried Woivré

It's taking longer than usual. However, I wanted to update you that multiple Azure engineering teams are involved and proactively working on your issue. We will keep you posted. Thank you.
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-06-03T08:56:00.5566667+00:00

Hi @Wilfried Woivré

Azure product team has removed the VNet dependencies from the backend.

Could you please try to delete the VNet and let me know if you still encounter any issues?
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-06-04T08:44:36.5933333+00:00

Hi @Wilfried Woivré

Did you had a chance to try on deleting the VNet from your side and let me know if still you face any issues while deleting the resources.

thanks,
Wilfried Woivré 6 Reputation points MVP

2025-06-04T10:02:23.51+00:00

Hello,

Yes i try it, and it's good now. Thank you.

Is it a transient error ? Can i try IPAM stuff now without issue ?
Shravan Addagatla 1,530 Reputation points Microsoft External Staff Moderator

2025-06-05T10:02:21.8533333+00:00

Hi Wilfried Woivré

Thanks for the response.

Yes, you can try now and let me know how it goes.

Answer 1

Hi @Wilfried Woivré

I understand that you are experiencing difficulties deleting your virtual network because it is associated with Azure IPAM.

Could you review it again and make sure there are no virtual machines, network interfaces, or other resources still linked to the Virtual Network? If there are any dependencies, please remove them first.

Azure IPAM might be automatically managing IP allocations, which could prevent deletion. Some users have discussed settings that influence how IPAM handles deleted VNets.

I hope you have followed the article: https://learn.microsoft.com/en-us/answers/questions/2223835/network-manager-ipam-failed-to-fetch-usage-data-er?WT.mc_id=AZ-MVP-4039694&source=docs and tried all the steps? like manual deletion using Azure CLI commands to remove the virtual network.

To troubleshoot the issue of failing to delete a virtual network in Azure, please refer to this document to see if it helps. https://learn.microsoft.com/en-us/azure/virtual-network/virtual-network-troubleshoot-cannot-delete-vnet

To assist you further, can you please share us the screenshot of the error message along with VNet & IPAM pool details?

You also can submit an Azure support request. To submit a support request, on the Azure support page, select Get support.

Please let me know if you have any questions.

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Failed to delete Virtual Networks due to usage of Azure IPAM

1 answer

Your answer