Mandatory update for Microsoft Azure Recovery Services agent: September 2019 (4515971)

Applies to: Azure


This article describes important updates, new features, improvements, and fixes for Azure Backup for the Microsoft Azure Recovery Services (MARS) agent version 2.0.9169.0 that is used by both Microsoft Azure Backup and Microsoft Azure Site Recovery (ASR) to transfer data to Azure. We strongly recommend that you download this version to take immediate advantage of critical backup and recovery features and improvements.

New Features

Expiry time for ad-hoc backups

In this release, customers can specify the expiry time of ad-hoc backups (for both files and system state) instead of defaulting to retention policy settings. This provides greater control on the retention of specific recovery points that may be required for audit and compliance.

Robocopy to accelerate item-level restores

Customers can now use the Windows nativeRobocopy tool for higher copy speeds when they recover individual files andfolders from the recovery volume through the InstantRestore method.


More robust incremental backups with better tracking of skipped and failedfiles

MARS agent is now equipped for more resilient incrementalbackups, even when it encounters files that either are not backed up despitemultiple attempts or get skipped because of unsupportedfile types. Additionally, customers can now track skipped filesduring a backup.

Enhanced error-reporting to resolve issues effectively

Customers can now directly select hyperlinks that are available in error messages (as opposed to copying them to a browser) toquickly navigate to contextual troubleshooting articles.

Issues that are fixed in this update

  • Fixes an issue that causes backups to bemarked incorrectly as initial backup in certain scenarios.
  • Adds backup and recovery success improvements for thebackup of files and folders.
  • Adds accessibility and reliability fixes andimprovements.

Update information

To applythis update, install the latest version of the Microsoft Azure Recovery Servicesagent.

The following file is available for download from the Microsoft DownloadCenter:

Note The version for this update of Microsoft Azure Recovery Services agent is 2.0.9169.0.

For more information about how to download Microsoft support files, see thefollowing Microsoft Knowledge Base article: 

119591 How to obtain Microsoftsupport files from online services

Microsoftscanned this file for viruses. Microsoft used the most current virus-detectionsoftware that was available on the date that the file was posted. The file isstored on security-enhanced servers that help prevent any unauthorized changesto the file.

Applying the update to multiple servers

If your servers are registered to one or more RecoveryServices Vaults, you can update your servers directly from the Azure portal. Follow these steps to update multiple servers from the Azure portal:

  1. Download the installer for the update from thelink in this section.
  2. Navigate to the Recovery Services Vault whereyour servers are registered.
  3. In the left-side Settings blade, select Backup Infrastructure under the Manage section.
  4. Under ManagementServers, select Protected Servers, and then select Azure Backup Agent as the Backup Management Type.

  5. In the blade thatappears, select a server for which the agent version is earlier than 2.0.9169.0.
  6. On the server detail blade, select Connect. This downloads a Remote Desktop Connection file that you can use to connect tothe server. Copy the downloaded agent to the server, and then update it.


After you are doneupdating, you can select other servers that have agent versions that are earlier than2.0.9169.0, and then you can update the agents on those servers.

Restart information

If you areusing Windows Server 2008 (SP2 and R2 SP1, any SKU), you have to restart the computer after you apply this update. Users who have installed the MARS agent onother Windows Server versions don’t have to restart the computer after they applyingthis update.


If you use System Center 2016Data Protection Manager (SC DPM), we recommend that you apply Update Rollup 1 forSystem Center 2016 Data Protection Manager or a later version.

If you use System Center 2012 R2 Data ProtectionManager (SC DPM), apply Update Rollup 12 forSystem Center 2012 R2 Data Protection Manager or a later version.