VirtualBox 5.1.20 is now available for download

Oracle has released VirtualBox 5.1 Maintenance Release 20 (Version 5.1.20 Build 114628) for Windows, Mac, Linux and Solaris. This release includes a number of improvements and regression fixes from Oracle VM VirtualBox 5.1.18

Here are highlights of changes in this release:

• GUI: fixed a possible crash when switching a multi-monitor VM into full-screen or seamless mode
• GUI: fixed non-literal shortcuts if the keyboard is not captured
• GUI: several mini-toolbar fixes in full-screen / seamless mode
• Windows Additions: another fix for automatic logins for Windows Vista and newer
• ICH9: fix for Windows guests with a huge amount (>64G) of guest memory
• BIOS: fixed El Torito hard disk emulation geometry calculation (thanks to Dwight Engen contribution)

Overview
Oracle VM VirtualBox (aka VirtualBox) is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2.

Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, 7, Windows 8/8.1, and Windows 10), DOS/Windows 3.x, Linux (2.4, 2.6 and 3.x), Solaris and OpenSolaris, and OpenBSD.

VirtualBox now officially supported Windows 10 RTM as guest and host platform and MAC OS X 10.11 El-Capitan as host platform.

What's new in VirtualBox 5.1?
VirtualBox 5.1 is the latest release of the world’s most popular free and open source, cross-platform virtualization software. This release supports the latest guest or host operating systems including: Mac OS X Yosemite, Windows 10, Oracle Linux, Oracle Solaris, other Linux operating systems, and legacy operating systems.

Here are highlight new features of VirtualBox 5.1:

• Improved Performance: Significantly improved performance for multi-CPU virtual machines and networking.
• Bug Reporting Tool: New utility able to collect all the information and logs related to the host and guest operating system, for debug or analysis purposes.
• Improved Logging Window: New logging functionalities to highlight and filter information related to guest Virtual Machines.
• Improved multimedia availability: Improved support for different USB devices and multi-channel audio availability.
• Flash storage emulation: New NVMHCI storage controller emulation available, able to emulate NVME devices - Flash storage - on guest Virtual Machine.
• Improved Linux integration: Automatic modules deployment in case of a Linux Kernel upgrade and improved systemd integration for the latest releases of popular Linux distributions.

Download VirtualBox 5.1.20 Build 114628
VirtualBox is available for download from VirtualBox Download Center. Download the files appropriate for you.

What's new in VirtualBox 5.1.20 Build 114628?
This release includes a number of stability improvements and bug fixes. See all the details here with a complete list of bug fixes.

References:
Changelog for VirtualBox 5.1.20
Oracle's Virtualization Blog