System Requirements

Make sure that your Microsoft organizations and backup infrastructure components meet the listed requirements.

Supported Organizations

The following table lists supported Microsoft Exchange and Microsoft SharePoint organizations:

Organization	Requirement
Microsoft Exchange	Veeam Backup for Microsoft 365 supports the following Microsoft Exchange versions: Microsoft 365 Exchange Online Microsoft 365 and Office 365 service families, standalone services and plans for Business, Education, and Government* hosted by Microsoft are supported. For more information about system requirements and limitations for Microsoft 365, see this Microsoft article. Microsoft Exchange Server 2019 (on-premises) Microsoft Exchange Server 2016 (on-premises) For more information about limitations for backup and restore of mail items, see Considerations and Limitations.
Microsoft SharePoint	Veeam Backup for Microsoft 365 supports the following Microsoft SharePoint versions: Microsoft 365 SharePoint Online Microsoft 365 and Office 365 service families, standalone services and plans for Business, Education, and Government* hosted by Microsoft are supported. For more information about system requirements and limitations for Microsoft 365, see this Microsoft article. Microsoft SharePoint Server 2019 For more information about hardware and software requirements, see this Microsoft article. Microsoft SharePoint Server 2016 For more information about hardware and software requirements, see this Microsoft article. Microsoft SharePoint Server Subscription Edition For more information about hardware and software requirements, see this Microsoft article and this Microsoft article.

Organization

Requirement

Microsoft Exchange

Veeam Backup for Microsoft 365 supports the following Microsoft Exchange versions:

Microsoft 365 Exchange Online

Microsoft 365 and Office 365 service families, standalone services and plans for Business, Education, and Government* hosted by Microsoft are supported. For more information about system requirements and limitations for Microsoft 365, see this Microsoft article.

Microsoft Exchange Server 2019 (on-premises)
Microsoft Exchange Server 2016 (on-premises)

For more information about limitations for backup and restore of mail items, see Considerations and Limitations.

Microsoft SharePoint

Veeam Backup for Microsoft 365 supports the following Microsoft SharePoint versions:

Microsoft 365 SharePoint Online

Microsoft SharePoint Server 2019

For more information about hardware and software requirements, see this Microsoft article.

Microsoft SharePoint Server 2016

For more information about hardware and software requirements, see this Microsoft article.

Microsoft SharePoint Server Subscription Edition

For more information about hardware and software requirements, see this Microsoft article and this Microsoft article.

*Government support is experimental. For more information, see this Veeam KB article.

Note

Throttling policies for Exchange Online cannot be managed in the Microsoft 365 interface.

Veeam Backup for Microsoft 365 Server

The following table lists system requirements for the machine with Veeam Backup for Microsoft 365:

Specification	Requirement
Hardware	The following hardware is required: CPU: any modern multi-core x64 processor, 8 cores minimum. Memory: 16 GB RAM minimum. Additional RAM and CPU resources improve backup, restore and search performance. If you plan to deploy Veeam Backup for Microsoft 365 on VM with dynamic memory allocation, such VM must have 32 GB RAM minimum. Disk Space: 3 GB for product installation and additional free space required for product logs and for the PostgreSQL instance and the NATS server deployment (if using the default installation). For optimal performance, we recommend to use SSD drive.
OS	64-bit version of the following Microsoft Windows operating systems are supported: Microsoft Windows Server 2016, 2019, 2022. Microsoft Windows 10 (versions 21H2, 22H2). Microsoft Windows 11 (versions 22H2, 23H2). Microsoft Windows Server Core editions 2016 (LTSC 1607), 2019 (LTSC 1809), 2022.
Configuration and Cache Database	Local or remote installation of PostgreSQL 15.8 or later. Consider that the configuration and cache database is highly loaded and resource-consuming. For optimal performance, we recommend to use SSD drive with at least 5000 IOPS (including installations on Azure and AWS instances). IOPS consumption varies according to the frequency of backups, the number of jobs, the size of protected Microsoft organizations, and so on. It is not recommended to share a PostgreSQL instance with any other services. It should be dedicated to host the Veeam Backup for Microsoft 365 configuration database and cached metadata only. Note: If you plan to use a database engine other than PostgreSQL 15.8, included in the Veeam Backup for Microsoft 365 setup, you must install it yourself. If you want to use an already installed PostgreSQL instance for the configuration database, make sure the instance contains the default postgres database. If you allow the setup to install a new PostgreSQL instance, the postgres database will be created on the instance automatically. Since Veeam Backup for Microsoft 365 connects to the postgres database to access the configuration database, do not rename the postgres database upon the installation.
NATS	Local or remote installation of the NATS server 2.10.18 or later.
Software	The following components are required: Microsoft ASP.NET Core Runtime 8.0.7 or later. Microsoft .NET Desktop Runtime 8.0.7 or later. Microsoft .NET Runtime 8.0.7 or later. To use PowerShell, Windows PowerShell 7.4.2 or later is required. For more information about Microsoft 365 system requirements and limitations, see this Microsoft article.

Important

Consider the following:

When you install Veeam Explorers and Veeam Backup for Microsoft 365 on different servers, the OS version on computers with Veeam Explorers must be the same or later than the OS version on a computer with Veeam Backup for Microsoft 365.
Veeam Explorers can be installed on a machine hosting Veeam Backup for Microsoft 365 8 or the Veeam Backup for Microsoft 365 Console component. You can also use a machine with Veeam Backup & Replication 12 or later that is deployed either along with any of these components, or as an independent solution.

The account you want to use for launching Veeam Backup for Microsoft 365 must be a member of the local Administrators group or have been assigned the Veeam Backup Administrator role. For more information, see Managing Users and Roles.

Machine with REST API

The following table lists system requirements for the machine with the Veeam Backup for Microsoft 365 REST API component:

Specification	Requirement
Hardware	The following hardware is required: CPU: any modern multi-core x64 processor, 8 cores minimum. Memory: 16 GB RAM minimum. Additional RAM and CPU resources improve backup, restore and search performance. If you plan to deploy the Veeam Backup for Microsoft 365 REST API server on VM with dynamic memory allocation, such VM must have 32 GB RAM minimum. Disk Space: 1 GB for the Veeam Backup for Microsoft 365 REST API server installation and additional free space for product logs.
OS	64-bit version of the following Microsoft Windows operating systems are supported: Microsoft Windows Server 2016, 2019, 2022. Microsoft Windows 10 (versions 21H2, 22H2). Microsoft Windows 11 (versions 22H2, 23H2). Microsoft Windows Server Core editions 2016 (LTSC 1607), 2019 (LTSC 1809), 2022.
Software	The following components are required: Microsoft ASP.NET Core Runtime 8.0.7 or later. Microsoft .NET Desktop Runtime 8.0.7 or later. Microsoft .NET Runtime 8.0.7 or later.

Specification

Requirement

Hardware

The following hardware is required:

CPU: any modern multi-core x64 processor, 8 cores minimum.

Memory: 16 GB RAM minimum. Additional RAM and CPU resources improve backup, restore and search performance.

If you plan to deploy the Veeam Backup for Microsoft 365 REST API server on VM with dynamic memory allocation, such VM must have 32 GB RAM minimum.

Disk Space: 1 GB for the Veeam Backup for Microsoft 365 REST API server installation and additional free space for product logs.

64-bit version of the following Microsoft Windows operating systems are supported:

Microsoft Windows Server 2016, 2019, 2022.
Microsoft Windows 10 (versions 21H2, 22H2).
Microsoft Windows 11 (versions 22H2, 23H2).
Microsoft Windows Server Core editions 2016 (LTSC 1607), 2019 (LTSC 1809), 2022.

Software

The following components are required:

Microsoft ASP.NET Core Runtime 8.0.7 or later.
Microsoft .NET Desktop Runtime 8.0.7 or later.

Microsoft .NET Runtime 8.0.7 or later.

Backup Proxy Server

The following table lists system requirements for machines that you plan to use as backup proxy servers:

Specification	Requirement
Hardware	The following hardware is required: CPU: any modern multi-core x64 processor, 4 cores minimum. Memory: 16 GB RAM minimum. Additional RAM and CPU resources improve backup, restore and search performance. If you plan to deploy Veeam Backup for Microsoft 365 backup proxy server on VM with dynamic memory allocation, such VM must have 32 GB RAM minimum. Disk space: 3 GB for the backup proxy server installation and additional free space for product logs.
OS	64-bit version of the following Microsoft Windows operating systems are supported: Microsoft Windows Server 2016, 2019, 2022. Microsoft Windows 10 (versions 21H2, 22H2). Microsoft Windows 11 (versions 22H2, 23H2). Microsoft Windows Server Core editions 2016 (LTSC 1607), 2019 (LTSC 1809), 2022. 64-bit versions of the following Linux distributions are supported: RHEL 8.8 LTS, 8.10 LTS, 9.0 LTS, 9.2 LTS, and 9.4 LTS Ubuntu: 20.04 LTS, and 22.04 LTS
Other	The following components are required: Microsoft .NET Runtime 8.0.7 or later. For Linux, you must install .NET packages from Microsoft package feed. For more information, see this Microsoft article. To use PowerShell, Windows PowerShell 7.4.2 or later is required. For a machine used as a workgroup backup proxy, the following settings are required: The Remote Registry service must run on the target machine. The service startup type must be set to Automatic. Backup proxy server ports must be opened in a firewall.

Specification

Requirement

Hardware

The following hardware is required:

CPU: any modern multi-core x64 processor, 4 cores minimum.
Memory: 16 GB RAM minimum. Additional RAM and CPU resources improve backup, restore and search performance.

If you plan to deploy Veeam Backup for Microsoft 365 backup proxy server on VM with dynamic memory allocation, such VM must have 32 GB RAM minimum.

Disk space: 3 GB for the backup proxy server installation and additional free space for product logs.

64-bit version of the following Microsoft Windows operating systems are supported:

Microsoft Windows Server 2016, 2019, 2022.
Microsoft Windows 10 (versions 21H2, 22H2).
Microsoft Windows 11 (versions 22H2, 23H2).
Microsoft Windows Server Core editions 2016 (LTSC 1607), 2019 (LTSC 1809), 2022.

64-bit versions of the following Linux distributions are supported:

RHEL 8.8 LTS, 8.10 LTS, 9.0 LTS, 9.2 LTS, and 9.4 LTS
Ubuntu: 20.04 LTS, and 22.04 LTS

Other

The following components are required:

Microsoft .NET Runtime 8.0.7 or later. For Linux, you must install .NET packages from Microsoft package feed. For more information, see this Microsoft article.

To use PowerShell, Windows PowerShell 7.4.2 or later is required.

For a machine used as a workgroup backup proxy, the following settings are required:

The Remote Registry service must run on the target machine. The service startup type must be set to Automatic.
Backup proxy server ports must be opened in a firewall.