How to delete a Network Interface which is attached to a deleted VM?

Hello @Jorian Ploegman | ICTexel ,

Please try the below provided steps:

• Open a web browser and navigate to https://resources.azure.com
• Log-in to the appropriate Azure account
• In the blade on the left side of the browser, expand subscriptions, then expand the desired subscription name
• In the blade on the left side of the browser, expand resource groups
• Under resource groups, expand the proper Resource Group Name
• Under the Resource Group, expand providers
• Under providers, expand Microsoft.Network
• Under Microsoft.Network, expand networkinterfaces
• Under networkinterfaces, select the NIC which you are failing to delete.
• Near the top of the content window of the browser, select the Read/Write push button
• Select the Actions(POST, DELETE) tab and click on Delete.

If it does not succeed and you receive an error, it has to be removed from the backend. Hence, if you have a support plan, I request you to file a support ticket. In case you need help with a one-time free support, please create a new Q&A post (needed for tracking support requests).

Regards,

Gita

hi @Jackson Martins , thanks for the reply. the command "az network nic delete --name <NIC-Name> --resource-group <Resource-Group-Name>"

gave this error:
"(NicInUse) Network Interface aadds-3ad4f5d2ca9d4b0e9769d59603dafc8f-nic is used by existing resource Cust-e-x-p-l-e-o-0-o-n-m-i-0f52d03f-d8ad-466a-a343-55adfcb48c2e/providers/Microsoft.Compute/virtualMachines/RQUROEG4ZLU1WRX.5193b551. In order to delete the network interface, it must be dissociated from the resource. To learn more, see aka.ms/deletenic.Code: NicInUse Message: Network Interface aadds-3ad4f5d2ca9d4b0e9769d59603dafc8f-nic is used by existing resource Cust-e-x-p-l-e-o-0-o-n-m-i-0f52d03f-d8ad-466a-a343-55adfcb48c2e/providers/Microsoft.Compute/virtualMachines/RQUROEG4ZLU1WRX.5193b551. In order to delete the network interface, it must be dissociated from the resource. To learn more, see aka.ms/deletenic."

And the command:
"Remove-AzNetworkInterface -Name <NIC-Name> -Force"

gave this error:

"Remove-AzNetworkInterface: Network Interface aadds-3ad4f5d2ca9d4b0e9769d59603dafc8f-nic is used by existing resource Cust-e-x-p-l-e-o-0-o-n-m-i-0f52d03f-d8ad-466a-a343-55adfcb48c2e/providers/Microsoft.Compute/virtualMachines/RQUROEG4ZLU1WRX.5193b551. In order to delete the network interface, it must be dissociated from the resource. To learn more, see aka.ms/deletenic. StatusCode: 400 ReasonPhrase: Bad Request ErrorCode: NicInUse ErrorMessage: Network Interface aadds-3ad4f5d2ca9d4b0e9769d59603dafc8f-nic is used by existing resource Cust-e-x-p-l-e-o-0-o-n-m-i-0f52d03f-d8ad-466a-a343-55adfcb48c2e/providers/Microsoft.Compute/virtualMachines/RQUROEG4ZLU1WRX.5193b551. In order to delete the network interface, it must be dissociated from the resource. To learn more, see aka.ms/deletenic. OperationID : 64f05257-8b0b-466a-a614-002bdf039a2d" The last set of commands didn't print anything:
"Get-AzNetworkInterface | where-object { $.VirtualMachine -eq $null } | ft name Get-AzNetworkInterface | where-object { $.VirtualMachine -eq $null } | Remove-AzNetworkInterface -Force"
(makes sense because the condition provided is virtualmachine == null. but in my case NICs associate to VMs ofc which are deleted). I don't think I have the luxury of opening a support ticket with Microsoft Azure. I'm facing this issue with a Free Trail Subscription. All my free credits are getting used up by this Domain Service🙂. Thanks for the help. Open for any other advice.