To resolve the issue of being unable to delete the orphan Restore Point Collection due to the error DiskRestorePointUsedByCustomer, you can follow these steps:
- Check Dependencies: Ensure that there are no backups or other resources that are still using the restore points. If any backup items are still associated with the restore point, they need to be removed first.
- Remove Locks: If there are any locks on the resource group or the restore point collection, you will need to remove them. You can do this by signing into the Azure portal, navigating to the resource group, and deleting any locks found in the Settings section.
- Clean Up Restore Points: After removing any locks, you may need to clean up the restore point collection. You can do this by running an on-demand backup, which will trigger the automatic cleanup of restore points. Expect that this operation may fail the first time, but it should ensure that the cleanup happens.
- Retry Deletion: Once the cleanup is complete, try deleting the restore point collection again.
If the restore point remains in a failed provisioning state, you may need to contact Azure support for further assistance, as there could be underlying issues that require their intervention.