Veeam Support Knowledge Base
How to Run Multiple Instances of the Veeam One Client

How to Run Multiple Instances of the Veeam One Client

KB ID:	1558
Product:	Veeam ONE \| 12 \| 12.1 \| 12.2 \| 12.3
Published:	2012-03-30
Last Modified:	2025-04-14

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Purpose

This article documents to enable multiple instances of the Veeam ONE Client to be launched on the same machine.

By default attempting to launch a second Veeam ONE Client while one is already running will change focus to the existing running Veeam ONE Client. The setting document in this article will the specific user the ability to launch multiple Veeam ONE Clients, which may be useful when managing multiple Veeam ONE Servers.

Solution

Registry Value Placement

Unlike many other custom Veeam settings controlled via the registry and stored within HKEY_LOCAL_MACHINE, this setting is stored in HKEY_CURRENT_USER.

This distinction is critical because the same key path exists in both HKEY_CURRENT_USER and HKEY_LOCAL_MACHINE, and placing the registry value in the latter location will have no effect.

Incorrect: HKEY_LOCAL_MACHINE\SOFTWARE\Veeam\Veeam ONE Monitor

Correct: HKEY_CURRENT_USER\Software\Veeam\Veeam ONE Monitor

This setting is machine and user-specific; you must create this registry value on the machine that will be used to launch the Veeam ONE Client while logged in as the user that will be launching the Veeam ONE Client.

Key Location: HKCU\Software\Veeam\Veeam ONE Monitor
Value Name: AllowMultMonitors
Value Type: DWORD (32-Bit) Value
Value Data: 1

PowerShell command to create this registry value and enable multiple instances of Veeam ONE Client:

New-ItemProperty -Path 'HKCU:\Software\Veeam\Veeam ONE Monitor\' -Name 'AllowMultMonitors' -Value "1" -PropertyType DWORD -Force
                
            

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