Please try vault deletion after the backup items are permanently deleted and there is no item in soft deleted state left in the vault.For more information. The soft deleted items are permanently deleted after 14 days of delete operation.
Recovery Services vault cannot be deleted as there are backup items in soft deleted state in the vault.Recover soft deleted backup items using an 'Undelete' operation, and then restore them to any recovery point that existed before the deletion. Intuitive recovery of 'soft deleted' data. This security feature is natively built-in for all the recovery services vaults. The backup data protection with soft delete is offered at no additional cost.Williamson, Australia The program does what it says. Thanks Alot!!! John, Cape Town It is very useful application for those who have ever lost their data or want to manage their Android data in a proper manner. The VM or VMs will appear with a red soft-delete icon next to it. Select the VM you want to restore from soft delete.
Under Protected items, click on Backup items and select Azure Virtual Machine. To restore a VM from soft-delete, logon to the Azure Portal and go to the recovery services vault holding the backup data.