Unraid 7.4.0-beta.2 Now Available

Unraid OS 7.4.0-beta.2 is out as the second beta build in the 7.4 series. This build adds Docker multi-network and memory controls, shared background task management, boot-device backup improvements, configurable power-button behavior, mover status tracking, and expanded hardware support. It also updates the Linux kernel to 6.18.47-Unraid and delivers security updates across core packages.

As always: please run beta builds on a test server, not production.

Containers / Docker

• New: Docker container templates support multiple custom networks, with additional network attachments retained when containers are recreated or updated.
• New: The Docker Add/Edit forms show a live preview for the container icon URL, with a fallback when the URL is empty or invalid.
• New: Advanced View exposes a Memory limit field for Docker containers.

Storage

• New: Mover progress and status tracking is available for Unraid 7.x.
• New: Drive-location support can use SGPIO/IBPI-capable controllers when SES is unavailable.
• Fix: A stopped array now shows offline and filesystem status text instead of 100% utilization.
• Fix: Pressing Enter in encrypted array passphrase fields now starts the array when passphrase validation succeeds.

WebGUI / System

• New: Background operations from plugins, Docker, and virtual machines can be queued and managed from a shared task tray, with foreground recall from any browser tab.
• New: Boot-device backups run as background tasks with selectable compression, live progress, and automatic download when complete.
• New: Configure the physical power button under Settings → Power Settings → Power Button → Physical power button, with Shut down, Reboot, and Do nothing actions.
• Improvement: Foreground task sheets now scale with the browser viewport while retaining saved-width and mobile behavior.
• Improvement: License checks now retry to handle transient availability and network conditions.
• Fix: Power Options retains both the Power Mode and Power Button tabs when the Dynamix System Buttons plugin is installed.
• Fix: Power Options no longer shows the virtualization warning on bare-metal servers.
• Fix: The Installed Plugins page checks updates independently so a slow or unreachable plugin does not keep the entire page waiting.
• Fix: Plugin update validation failures remain visible with an explanation instead of silently reporting the plugin as up-to-date.
• Fix: Plugin Manager post-hook cleanup now runs when error messages contain shell characters.

Networking / Hardware

• New: Added kernel modules and firmware for Realtek RTW88 8812A, 8814A, and 8821A wireless adapters.
• New: Added support for additional PlayStation, Nintendo, Steam, and Logitech controllers, along with additional audio codecs.
• Improvement: Network defaults now follow Fedora's /etc/sysctl.conf baseline, including CUBIC TCP congestion control and fq_codel as the default packet scheduler.

Virtualization

• New: Added kernel support for Hyper-V virtualization, including Hyper-V storage, balloon, keyboard, and VMBus modules.
• Fix: VM startup no longer logs a PHP deprecation warning when the QEMU location lookup produces no output.

Security

• Core package updates include fixes or security-related updates across cryptographic, web, file-sharing, networking, and X server components — including OpenSSL, Samba, PHP, jq, xorg-server, libXfont2, nginx, libssh, and p11-kit.
• Notification integrations now verify the public API certificate instead of skipping certificate validation.

Linux Kernel

The Linux kernel is updated to 6.18.47-Unraid.

Unraid API

Updated dynamix.unraid.net to 4.37.3 — see changes.

Known Issues

No release-specific known issues are documented for beta.2. Report anything you find on the Unraid OS Prerelease (Bugs & Feedback) forum.

Rolling Back

No new release-specific rollback warnings are documented. For earlier rollback guidance, see the Unraid OS 7.3.2 release notes. Follow the normal prerelease rollback process before moving between builds.

Reporting Issues

Please report anything you find in the Unraid OS Prerelease (Bugs & Feedback) forum. Hardware details, steps to reproduce, and relevant logs all help. Thanks for testing.