Unable to enable Azure VM backup after creating a Recovery Services vault

Olivia 0 Reputation points
2026-07-12T22:50:34.78+00:00

I created a Recovery Services vault and followed the steps in the documentation to enable backup for my Azure VM. When I try to configure the backup policy, I receive an error and backup isn't enabled.

Is there a way to identify what's preventing Azure Backup from enabling protection? Which logs or diagnostic information should I check first?

Azure Backup
Azure Backup

An Azure backup service that provides built-in management at scale.

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  1. VEMULA SRISAI 13,890 Reputation points Microsoft External Staff Moderator
    2026-07-12T23:11:39.4333333+00:00

    Hello Olivia,

    Based on the symptoms, the most likely cause is that Azure Backup is unable to complete the protection enablement workflow due to a VM validation failure, Azure Backup extension deployment issue, missing permissions, or an unsupported VM configuration. Azure Backup relies on the Azure VM Agent and Backup extension to register the VM with the Recovery Services vault, and if either step fails, protection cannot be enabled.

    To resolve the issue, verify that the Azure VM Agent is installed and running correctly, confirm the Backup extension is successfully deployed on the VM, and ensure the account enabling backup has the required permissions on both the VM and the Recovery Services vault. Also review the vault's Activity Log and Backup jobs for any failed operations. In many cases, correcting the underlying validation or extension issue and then retrying Enable** **Backup successfully completes the registration and protection process.

    For ongoing monitoring and troubleshooting, configure Diagnostic Settings on the Recovery Services vault and send Azure Backup logs to Log Analytics. These logs provide detailed information about backup registration, policy assignment, and protection enablement failures.

    https://learn.microsoft.com/en-us/azure/backup/backup-azure-arm-vms-prepare

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