To prevent automatic locking by Azure Backup on a storage account, you can remove the lock from the recovery point resource group:
- Sign in to the Azure portal
- Select All Resources
- Select the restore point collection resource group
- In the Settings section, select Locks.
- select the ellipsis and select Delete
You can also stop protection for a backup item by following these steps:
- Go to the Backup center
- Select Backup Instances from the menu
- Select Azure Files (Azure Storage) as the datasource type
- Select the backup item for which you want to stop protection
- Select the Stop backup option
- On the Stop Backup blade, select Retain Backup Data or Delete Backup Data