Hi @David Osborne [MSDN]
Welcome to Microsoft Q&A.!
Please go through the below steps:
Remove the Private Endpoint Connection:
1.Go to Virtual Network int-ase-v3 in the Azure portal.
2.Check the Connected Devices tab for the waws-prod-sy3-0ef52bbe-swift-lb connection.
3.Try to manually remove or detach it.
Force Delete the Virtual Network:
1.If you can't remove the connection, use these commands to delete the virtual network:
Remove-AzVirtualNetwork -Name "int-ase-v3" -ResourceGroupName "dev-app-service-env-v3" -Force
Reference links : https://learn.microsoft.com/en-us/powershell/module/az.network/remove-azvirtualnetwork?view=azps-12.4.0 https://learn.microsoft.com/en-us/cli/azure/network/vnet?view=azure-cli-latest#az-network-vnet-delete
If you have any further queries, do let us know.
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