# System Requirements for Active Directory

Verify that your environment meets the system requirements for Active Directory.

## Operating System

Important

Use the most recent version of the operating system that is listed. The Commvault software fully supports the most recent version of an operating system, until the vendor ends support. More recent versions of the Commvault software might not install on operating systems that are not supported by the vendor anymore. For information about the support lifecycle of an operating system, contact the vendor.

Operating system | Processor architecture
--- | ---
Microsoft Windows Server 2025 - all editions | All Windows-compatible processors are supported
Microsoft Windows Server 2022 - all editions | All Windows-compatible processors are supported
Microsoft Windows Server 2019 - all editions | All Windows-compatible processors are supported
Microsoft Windows Server 2016 - all editions | All Windows-compatible processors are supported

## Hard Drive

Component | Space required
--- | ---
Software | 1 GB
Job results folder | 256 MB
Log folder | 256 MB

## Memory (RAM)

2 GB or more

## Port Requirements

The standard Lightweight Direct Access Protocol (LDAP) port 389 is used between Active Directory and the destination MediaAgent to perform backup.

## Network Requirements

For information on network connectivity requirements, see Network.

## Software That Is Automatically Installed

### File System Agent

The file system agent is automatically installed during the installation of this software, if it is not already installed. For file system system requirements, see the following: System Requirements for Windows

### Microsoft Visual C++ Redistributable 2017

Starting with Service Pack 18, Microsoft Visual C++ Redistributable 2017 (vcredist2017.exe) is automatically installed.

If a computer does not have the most recent Windows updates, the installation of Microsoft Visual C++ Redistributable 2017 will fail in installing Universal C Runtime. The following Windows updates must be installed to prevent the installation failure. The updates are not required on the most recent Windows operating system versions, such as Microsoft Windows 10 and Microsoft Windows Server 2016, because these versions have the Universal C Runtime already installed.

- KB2919355

- KB2939087

- KB2975061

- KB2999226

## DISCLAIMER

Certain third-party software and service releases (together, "Releases") may not be supported by Commvault. You are solely responsible for ensuring Commvault’s products and services are compatible with any such Releases.

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