Find and Delete all Orphaned Azure NICs and

Azure, Microsoft

Find and Delete all Orphaned Azure NICs and

Kyle Wise
August 9, 2023

Here’s a script that will find all the Azure Network interfaces that are orphaned/Unattached and remove them. Excludes any Private Endpoints and uses Resource Graph to quickly find the NICs.

# Define the subscription ID
$subscriptionId = '1234'

# Define the Resource Graph query
$query = @"
resources
| where type == 'microsoft.network/networkinterfaces'
| where subscriptionId == '$subscriptionId'
| extend vmId = properties.virtualMachine.id
| where isnull(vmId)
| where isnull(properties.privateEndpoint)
"@

# Run the Resource Graph query
$orphanedNICs = Search-AzGraph -Query $query
Write-Output $orphanedNICs

# Check if there are any orphaned NICs
if ($orphanedNICs.Count -gt 0) {
    Write-Host "Orphaned Unattached NICs found. Deleting them..."

    foreach ($nic in $orphanedNICs) {
        $nicDetails = Get-AzNetworkInterface -ResourceId $nic.id
        Remove-AzNetworkInterface -Name $nicDetails.Name -ResourceGroupName $nicDetails.ResourceGroupName -Force -WhatIf
        Write-Host "Deleted NIC with ID:" $nic.id
    }

    Write-Host "Orphaned Unattached NICs have been removed from your Azure Environment."
} else {
    Write-Host "Congratulations! No orphaned unattached NICs were found."
}
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