Updating Veeam Backup & Replication in Silent Mode

Veeam Backup & Replication updates can be installed in the silent mode.

To install a Veeam Backup & Replication update, perform the following steps:

Download the update installation archive and extract the executable file.
Install the update on the backup server.

Updating Veeam Backup & Replication in Silent Mode Important!

The script that installs Veeam Backup & Replication updates must be run with elevated privileges (run as Administrator).

Step 1. Download and Extract Executable File

Download and extract the executable file for update installation:

Download the installation archive for the Veeam Backup & Replication update from the Release Notes page for a certain update/patch. For example, for v12.1 updates, download the latest patch from this Veeam KB article.
Extract the executable file from the downloaded archive.
Save the extracted file locally on the backup server where you plan to install the update, or place it in a network shared folder.

Alternatively, you can get the update/patch executable file from the Updates folder on the downloaded ISO image.

Step 2. Install Update

To install the Veeam Backup & Replication update on the backup server, use the following command syntax:

%patch% [/silent][/noreboot][/log <log_path>][VBR_AUTO_UPGRADE="1"]

The command has the following parameters:

Step 2. Install Update
Option	Parameter	Required	Description
%patch%	path	Yes	Specifies a path to the update installation file on the backup server or in a network shared folder. Example: C:\Temp\VeeamBackup&Replication_11.0.1.1261_20220302.exe
silent	—	Yes	Sets the user interface level to “no”, which means no user interaction is needed during installation.
noreboot	—	No	Suppresses reboot if reboot is required during the Veeam Backup & Replication update installation.
log	path	No	Specifies a full path to the log file for the Veeam Backup & Replication update installation. Example: C:\Logs\veeam.log
VBR_AUTO_UPGRADE	0/1	No	Specifies if you want Veeam Backup & Replication to automatically upgrade existing components in the backup infrastructure. Veeam Backup & Replication performs automatic upgrade after the Veeam Backup Service is started on the backup server. Specify 1 to enable automatic upgrade. Example: VBR_AUTO_UPGRADE="1"

For example:

You want to install the Veeam Backup & Replication update with the following options:

Path to the update installation file: C:\Temp\VeeamBackup&Replication_12.0.0.1420_20230223.exe
Silent install: enabled
Noreboot: enabled
Path to the log file: C:\Logs\veeam.log
Components auto upgrade: enabled

The command to install the Veeam Backup & Replication update will be the following:

C:\Temp\VeeamBackup&Replication_12.0.0.1420_20230223.exe /silent /noreboot /log C:\Logs\veeam.log VBR_AUTO_UPGRADE="1"

Installation Results

You can use the last exit code to verify if the installation process has completed successfully.

In cmd.exe, use the %ERRORLEVEL% variable to check the last exit code.
In Microsoft Windows PowerShell, use the $LastExitCode variable to check the last exit code.

Veeam Backup & Replication does not provide any confirmation about the results of automatic components upgrade. To check if components have been successfully upgraded, use the Veeam Backup & Replication console.