VirtualBox 5.1.24

VirtualBox is a full x86 hardware virtualizer, suitable for server, desktop and embedded usage. It's extremely feature-rich, emulates lots of individual and alternative hardware and devices, supports different virtual machine disk formats, it's cross-platform and supports ancient and current Windows versions, DOS systems, BSD, Solaris and OS/2 as guest operating system.

Tags c c++ virtual-machine operating-system virtualization emulation
License GNU GPL
State stable

Recent Releases

5.1.2419 Jul 2017 23:45 minor feature: VMM: mask the VME CPUID capability on AMD Ryzen processors for now to make certain guests works, for example Windows XP VMM: emulate more SSE2 instructions. VMM: properly clear the TF and AC flags when dispatching real-mode interrupts. GUI: to make the mini-toolbar work with recent versions of KDE / Plasma. GUI: a potential crash when a VM with multiple screens is running in full screen / seamless mode and a host screen is removed, for example when connecting to the host via RDP. GUI: initial size hints for guests which set intermediate sizes before responding. GUI: prevent stopped screen updates or black screen on reboot in a multi-screen setup under certain conditions. Audio: many improvements for Windows 10 guests. Storage: possible crash when using Intels SPDK. API: use the correct file name of the VM machine state if the VM settings directory is renamed, for example during grouping / ungrouping a VM. API: return the correct error code if powering up a VM fails. API: video recording did not automatically start at VM start when enabled in the VM settings. API: when relocating a medium, check that the target path is fully qualified. EFI: for VMs with more than 3504MB RAM. Host-only adapter: correctly determine IPv4 netmasks on Windows hosts. NAT network: properly do the refcounting for starting / stopping the NAT / DHCP services if the NAT network is changed while the adapter network connection type is anything else but NAT network. VBoxManage: controlvm videocapfile. Windows hosts: crashes if driver verifier is enabled. Linux / Mac OS X hosts: more for loading shared libraries. Linux hosts / guests: Linux 4.12. Linux hosts / guests: reduce the kernel stack consumption for Linux kernels with. CONFIG_CPUMASK_OFFSTACK defined. Linux hosts / guests: for kernel modules built with gcc-7. Linux hosts / guests: Linux 4.13. Linux hosts: don't depend on net-tools on newer distributions as this package is deprecated in favour of iproute. Linux hosts: make 2D video accelera
5.1.2230 Apr 2017 07:25 minor feature: VMM: VERR_IEM_INSTR_NOT_IMPLEMENTED Guru Meditation under certain conditions VMM: software virtualization on Solaris hosts (5.1.20 regression). Storage: a potential hang under rare circumstances. Storage: a potential crash under rare circumstances (asynchronous I/O disabled or during maintenance file operations like merging snapshots). Linux hosts: make the ALSA backend work again as well as loading the GL libraries on certain hosts. Linux Additions: mount.vboxsf symlink problem.
5.1.2020 Apr 2017 11:05 minor feature: GUI: don't check if the Extension Pack is up-to-date if the user is about to install a new Extension Pack GUI: a possible crash when switching a multi-monitor VM into full-screen or seamless mode. GUI: non-literal shortcuts if the keyboard is not captured (5.1.10 regression; Windows hosts only). GUI: several mini-toolbar in full-screen / seamless mode (X11 hosts only). GUI: don't crash on restoring defaults in the appliance import dialog. Windows Additions: another for automatic logins for Windows Vista and newer. ICH9: for Windows guests with a huge amount ( gt;64G) of guest memory. BIOS: El Torito hard disk emulation geometry calculation.
5.1.1818 Mar 2017 05:25 minor feature: Shared Folders: case insensitive filename access Shared Folders: access to long pathes. API: snapshot handling of medium attachments and PCI device attachments. API: make 32-bit Windows guests in raw mode boot again if the ICH9 chipset is used (5.1.16 regression). VBoxReport: VM log collection. Linux hosts: autostart service script. Windows Additions: automatic logins for Windows Vista and newer.
5.1.1609 Mar 2017 10:25 minor feature: VMM: don't access the. MSR_IA32_SMM_MONITOR_CTL MSR if. dual-monitor treatment is not available VMM: another for handling certain MSRs on ancient CPUs without VT-x support for MSR bitmaps. VMM: VERR_SSM_LOAD_CPUID_MISMATCH errors when restoring a saved state with SMP guests on hosts without the. CPUID/HTT bit set. VMM: a in call gate emulation. VMM: FWAIT instruction. VMM: a sporadic guest hang under certain conditions. GUI: hide the mini-toolbar from the taskbar and the pager on certain X11 hosts. GUI: better error handling on the global settings / network / host-only / DHCP server settings. GUI: for full-screen with multiple screens. Host-only Network: host-only adapter creation preventing VirtualBox installation on Windows 10 hosts. NAT network: two potential crashes in the DHCP server. ICH9: incorrect initialization of the primary bus for PCI bridges (5.1.14 regression). Storage: LsiLogic for Windows 10. USB: not being able to attach certain USB devices having invalid characters in the device strings. USB: several for the USB/IP support. VBoxSVC: another crash during shutdown under rare circumstances. VBoxSVC: a stack overflow on. OVF: when importing an appliance handle more than 10 network adapters if the OVA was created by VirtualBox. OVF: for exporting and importing appliances with many disks. VBoxManage: regression with. modifyhd --resize. rdesktop-vrdp: source code tarball. Linux Installers: do not rebuild kernel modules unnecessarily. Linux hosts: added an action for opening the VM manager window to the.desktop file. Linux hosts / guests: Linux 4.11 compile. Linux Additions: added. vboxsf FS modules alias. Linux Additions: for the shared folders kernel module to compile on Linux 4.10. Linux Additions: properly install the Linux kernel module override rule on distributions without /etc/depmod.d. Windows Additions: a crash with recent Windows 10 builds if 3D is disabled.
5.1.1419 Jan 2017 08:05 minor feature: VMM: emulation of certain instructions for 64-bit guests on 32-bit hosts VMM: properly handle certain MSRs for 64-bit guests on ancient CPUs without VT-x support for MSR bitmaps. GUI: a crash with multimonitor setups under certain conditions. GUI: allow cloning of snapshots when the VM is running. NVMe: compatibility with the Storage Performance Development Kit. VBoxSVC: a crash under rare circumstances. VBoxManage: added a sanity check to modifymedium --resize to prevent users from resizing their hard disk from 1GB to 1PB. Windows hosts: another for recent Windows 10 hosts. Linux hosts: Linux 4.10. Linux Additions: protocol error during certain operations on shared folders.
5.1.1222 Dec 2016 02:25 minor feature: VMM: VERR_IEM_ASPECT_NOT_IMPLEMENTED Guru Meditations with certain Linux guests if KVM paravirtualization is enabled VMM: VERR_VMX_UNABLE_TO_START_VM Guru Meditations under rare conditions. GUI: prevent a crash under certain conditions if the VM is terminated very early. GUI: certain keyboard capture. GUI: dragging guest windows in seamless mode with the keyboard captured. GUI: a problem where the new version detected dialog was covered by the appliance import dialog. Storage: NVMe reset processing when doing rmmod nvme; modprobe nvme in a Linux guest. Storage: creating a snapshot when the VM is running and an NVMe controller is present. Storage: a problem with the LsiLogic SCSI controller where requests could be lost with SMP guests. E1000: "cable disconnected". E1000: "TX unit hang". Parallel ports: port enumeration on Windows host. API: don't crash when sanitizing certain VM names. Linux hosts: automatically disable asynchronous I/O on Linux 2.6.18 kernels as high I/O load may trigger kernel oopses on these kernels if this feature is enabled. Linux hosts / guests: Linux 2.6.28 compile. Linux hosts: compile Linux 4.9 compile. Linux Additions: warn the user about a known with older Linux guests (e.g. Debian 7) requiring manual work to get 3D working. Linux Additions: the graphics driver build with Linux 4.10 and later. Windows Additions: a crash in the WDDM driver under certain conditions.
5.1.1023 Nov 2016 10:05 minor feature: GUI: the USB filter settings dialog should allow to specify the USB revision in hexadecimal format GUI: crash on certain hosts when pressing certain key combinations. GUI: with updating the available-geometry on host-screen work-area resize. GUI: don't crash / hang on certain environments if accessibility support is enabled. GUI: various in Unscaled HiDPI Output mode. GUI: extend the VM Input menu with. Print Screen -related actions. GUI: improved handling of inserting the Guest Additions ISO image by trying all available optical drives rather than only the first one and by not asking the user if he wants to force unmounting (which doesn't work in most cases anyway). API: default to RTC using UTC for Solaris 11 guests. Settings: be less restrictive when reading a VM configuration containing a host-only adapter without an interface name. Storage: resizing VDI images resulting in an unbootable image under certain circumstances. NAT: several 5.1.8 regressions on Mac OS X and Windows hosts. Audio: a few 5.1.x regressions by using the audio code from 5.0.x until the audio overhaul is completed. VBoxManage: documentation of the. storagectl command. Build system: another for building VirtualBox on systems which default to Python 3. Windows hosts: hardening for Windows 10 build 14971. Windows Additions: properly start the VirtualBox guest services even if the guest user name contains special characters. Solaris Additions: preemptible mouse notification callback being executed under a spinlock for Solaris guests. Linux hosts / guests: Linux 4.9. Linux Additions: Linux kernel module override rule.
5.1.819 Oct 2016 15:45 minor feature: GUI: keyboard shortcut handling regressions GUI: keyboard handling regression for separate UI. NAT: don't exceed the maximum number of "search" suf. Patch from #15948. NAT: parsing of port-forwarding rules with a name which contains a slash. NAT Network: when the host has only loopback nameserver that cannot be mapped to the guests (e.g. dnsmasq running on, make DHCP supply NAT Network DNS proxy as nameserver. Bridged Network: prevent flooding syslog with packet allocation error messages. Audio: now using Audio Queues on Mac OS X hosts. Audio: recording with the PulseAudio backend (5.1 regression). Audio: various. Snapshots: regression in 5.1.4 for deleting snapshots with several disks. Snapshots: crash and better error reporting when snapshot deletion failed. Storage: some for the NVMe emulation with Windows guests. API: initialization of SAS controllers. Build system: make it possible to build VBox on systems which default to Python 3. Windows hosts: detect certain cases of. REGDB_E_CLASSNOTREG errors and print a helpful error message. Windows hosts: adapted to changes in Windows 10 build 14901. Windows hosts: better support for processor groups on Windows 7 and later which is required on certain hosts with many CPUs. Windows installer / Additions: added option to prevent creating of start menu items. Windows Additions / VGA: if the guest's power management turns a virtual screen off, blank the corresponding VM window rather than hide the window. Windows Additions: a generic which could lead to freezing shared folders. Linux hosts / guests: for kernels with. CONFIG_CPUMASK_OFFSTACK set. Linux Additions: don't require all virtual consoles be in text mode. This should cases when the guest is booted with a graphical boot screen. Linux Additions: added depmod overrides for the vboxguest and vboxsf kernel modules to conflicts with modules shipped by certain Linux distributions. X11 Additions: disable 3D on the guest if the host does not provide enough ca
5.1.613 Sep 2016 06:45 minor feature: GUI: with opening '.vbox' files and it's aliases GUI: keyboard grabbing. GUI: for passing through Ctrl + mouse-click. GUI: automatic deletion of extension pack files. USB: showing unknown device instead of the manufacturer or product description under certain circumstances. XHCI: another for a hanging guest under certain conditions as result of the for #15747, this time for Windows 7 guests. Serial: high CPU usage with certain USB to serial converters on Linux hosts. Storage: attaching stream optimized VMDK images. Storage: reject image variants which are unsupported by the backend. Storage: loading saved states created with VirtualBox 5.0.10 and older when using a SCSI controller. Storage: broken NVMe emulation if the host I/O cache setting is enabled. Storage: using multiple NVMe controllers if ICH9 is used. NVMe: a crash during reset which could happen under certain circumstances. Audio: microphone input. Audio: crashes under certain conditions. Audio: recording with the ALSA backend (5.1 regression). Audio: stream access mode with OSS backend (5.1 regression, thanks to Jung-uk Kim). E1000: do also return masked bits when reading the ICR register, this booting from iPXE. BIOS: bpp scanline calculation. API: relax the check for the version attribute in OVF/OVA appliances. Windows hosts: crashes when terminating the VM selector or other VBox COM clients. Linux Installer: path to the documentation in.rpm packages (5.1.0 regression). Linux Installer: the script to prevent an SELinux complaint. Linux hosts: don't use 32-bit legacy capabilities. Linux Additions: Linux 4.8 for the kernel display driver. Linux Additions: don't load the kernel modules provided by the Linux distribution but load the kernel modules from the official Guest Additions package instead. Linux Additions: dynamic resizing problems in recent Linux guests. User Manual: error in the VBoxManage chapter for the. getextradata enumerate example.
5.1.418 Aug 2016 12:25 minor feature: GUI: show actual VM uptime in the session information window Audio: re-enabled speakers for Mac OS X guests. Audio: crashes under certain conditions. USB: a hang under certain conditions. USB: a hanging guest under certain conditions. PIIX4: implemented dummy SMBus controller to prevent annoying Linux kernel warnings about uninitialized SMBus base address. NVMe: several to improve stability, a crash while saving a VM state. VMDK: an creating size images with certain sizes and the Split2G option enabled. VHDX: cloning images with. VBoxManage clonehd. Storage: broken bandwidth limitation when the limit is very low. EFI: sending demessages in the EFI firmware if a serial port is enabled. OVF: when importing appliances, make sure that the version of the embedded VirtualBox-specific settings is processed, to get the default settings handling right. VBoxManage: Don't try to set the medium type if there is no change. Linux installer: some scripting. Linux installer: a path on certain Linux distributions. Windows hosts: corrupted mouse pointers with some Linux and Solaris guests. Linux Additions: made the video driver work on 32-bit guests with large video memory sizes. Linux Additions: made the video driver work on kernel 4.7 and later. Linux Additions: converted a failure message to an informational one when drivers could not be stopped during upgrade. Linux Additions: made the video driver work around an X server which cause screen refresh to stop. Windows Additions: auto-resizing for Windows 10 guests. Windows Additions: VBoxTray problems with Windows 2000.
5.1.222 Jul 2016 09:45 minor feature: VMM: several. GUI: screenshot if the VM is started in separate mode GUI: with double-click/opening registered file types (.vbox and.vbox-extpack) on Mac OS X. GUI: a which made it impossible some error/warning messages using the button. GUI: weakened the control over the VM window behavior allowing to resize it across multiple screens and to use in Snap Assist techniques. GUI: jump to the second tab of the session information window (5.1.0 regression). GUI: for Alt-Tab. Storage: creating size VHD images. Storage: a hang during power off if the VM was suspended before and a NVMe controller is configured. USB: a crash under certain conditions. Audio: make AC'97 volume control work again. Audio: rare VM hangs when using AC'97 emulation. Audio: SB16. EFI: access to devices attached to SATA port 2 and higher. OVA: for checking certain signatures. OVA: MAC address generation for appliances created by VirtualBox. API: audio settings handling for older config files. API: truncation of USB product/vendor IDs on Linux hosts. API: VRDP with authentication. API: don't crash if there is no graphics controller configured. Linux hosts: EL5 builds. non-Windows hosts: a crash during shutdown under rare circumstances. Linux Additions: SELinux which prevented certain Linux guests to work in 3D mode. User Manual: updates.
5.114 Jul 2016 14:25 minor feature: VMM: new APIC and I/O APIC implementations that result in significantly improved performance in certain situations VMM: added support for Hyper-V paravirtualized deging of Windows guests. VMM: emulate even more MMIO and shadow pagetable exits without going back to user mode. GUI: overall migration to Qt5. GUI: passive API event listener improving the VM GUI performance and response time. Audio: added HDA (High Definition Audio) support for newer Linux guests. Audio: added on-demand timers which should improve the overall performance and reduce the CPU consumption. Audio: more fine-grained volume control for the AC'97 emulation, which now also takes the master volume control into account. better support for Python 3.
5.0.2430 Jun 2016 00:05 minor feature: VMM: reverted to the old I/O-APIC code for now to certain regressions with 5.0.22. This means that the networking performance with certain guests will drop to the 5.0.20 level. One workaround is to disable GRO for Linux guests. Main: when taking a screenshot, don't save garbage for blanked screens. NAT: correctly parse resolv.conf file with multiple separators (5.0.22 regression). Storage: a possible corruption of stream optimized VMDK images from VMware when opened in read/write mode for the first time. Audio: imlemented dynamic re-attaching of input/output devices on Mac OS X hosts. ACPI: notify the guest when the battery / AC state changes instead of relying on guest polling. Linux hosts: VERR_VMM_SET_JMP_ABORTED_RESUME Guru Meditations on hosts with Linux 4.6 or later. Solaris hosts: make the GUI work on Solaris 10 again.
5.0.2218 Jun 2016 06:25 minor feature: VMM: for certain Intel Atom hosts VMM: properly restore the complete FPU state for 32-bit guests on 64-bit hosts on Intel Sandy Bridge and Ivy Bridge CPUs. VMM: new I/O-APIC implementation ing several and improving the performance under certain conditions. VMM: a potential Linux guest panic on AMD hosts. VMM: a potential hang with 32-bit EFI guests on Intel CPUs (VT-x without unrestricted guest execution). GUI: don't allow to start subsequent separate VM instances. GUI: raised upper limit for video capture screen resolution. GUI: warn if the VM has less than 128MB VRAM configured and 3D enabled. Main: when monitoring DNS configuration changes on Windows hosts avoid false positives from competing DHCP renewals. This should NAT link flaps when host has multiple DHCP configured interfaces, in particular when the host uses OpnVPN. Main: properly display an error message if the VRDE server cannot be enabled at runtime, for example because another service is using the same port. NAT: Initialize guest address guess for wildcard port-forwarding rules with default guest address. VGA: for a problem which made certain legacy guests crash under certain conditions. ACPI: properly notify the guest if the ACPI battery state changed. OVF: import problems for some appliances using an AHCI controller created by 3rd party applications. SDK: reduced memory usage in the webservice Java bindings. Windows hosts: performance regresson with SMP guests (5.0 regression). Windows hosts: for the shared clipboard. Windows hosts: Windows hardening. Windows Additions: to retain the guest display layout when resizing or disabling the guest monitors. Linux hosts: EL 6.8. Linux hosts: Linux 4.7. Linux Additions: Linux 4.7. Linux Additions: for certain 32-bit guests. Linux Additions: mouse pointer offset. Linux Additions: made old X.Org releases work again with kernels 3.11 and later. Linux Additions: X.Org crash after hard guest reset. Linux Additions: don't stop the X11 setup if loading the shared
5.0.2002 May 2016 00:45 minor feature: Storage: a regression causing write requests from the BIOS to cause a Guru Meditation with the LsiLogic SCSI controller Storage: several emulation in the BusLogic SCSI controller emulation. NAT Network: support TCP in DNS proxy. NAT: rework handling of port-forwarding rules. NAT: rewrite host resolver to handle more query types and make it asynchronous so that a stalled lookup doesn't block all NAT traffic. Snapshots: don't crash when restoring a snapshot which has more network adapters than the current state (ie when the snapshot uses ICH9 and the current state uses PIIX3). Guest Control: various for the. copyfrom and. copyto commands / API. VBoxManage: list processor features on. list hostinfo. Linux hosts: for Linux 4.5 if. CONFIG_NET_CLS_ACT is enabled. Windows hosts: another for recent Windows 10 insider builds. Windows hosts: make it work on Windows XP again (5.0.18 regression). Windows Additions: performance with PowerPoint 2010 and the WDDM graphics drivers if Aero is disabled.
510 Oct 2015 03:05 minor feature: GUI: the update check now uses the HTTP system proxy settings by default GUI: About dialog improvements. Copyable version text, do not dialog on mouse-clicks and focus losing, explicit button at the bottom of dialog and disabled button on OS X.. GUI: when re-assigning shortcuts. GUI: default focus button in message-box dialogs. GUI: settings dialog which is opened if the network settings need to be changed at VM startup. GUI: crash during VM start if an early error message needs to be shown, for example Linux kernel modules not present. Bridged Networking: handling of guest DHCP requests without UDP checksum when bridging to a wireless interface. Audio: latency. Guest Control: correctly set. USERNAME and. USERPROFILE environment variables (Windows guests only). Guest Control: several. API: properly restore NAT port forwarding rules when reverting to a snapshot. Parallel ports: Several allowing to enable two parallel ports for a VM. VBoxManage: wrong output of. devm show command. VBoxManage: hang when specifying logging groups with. devm log starting with. h, for example. hex. Windows hosts: renamed VBoxStartup.log to VBoxHardening.log and provide this log file in the GUI log viewer. Windows hosts: a small memory leak in the Windows host interface driver (VBoxNetAdp) which caused a BSOD if the driver verifier is enabled. Windows hosts: a failure to start VMs on hosts where dsound.dll is not available. Windows hosts: another for. VERR_LDR_MISMATCH_NATIVE errors. Windows hosts: host-to-guest communication with bridged networking. Windows hosts: broken data receiving from the serial device with the named pipe backend if Kaspersky AV is installed. Linux hosts: Linux 4.3 compile. Linux hosts: installer for certain systems. Linux hosts / guests: native systemd support for the host/guest installer scripts. The scripts for re-compiling the kernel modules are now located at /sbin/rcvboxdrv (host) and /sbin/rcvboxadd (Guest Additions). Mac OS X hosts: GUI-related for El C
5.0.604 Oct 2015 16:05 minor feature: GUI: the update check now uses the HTTP system proxy settings by default GUI: About dialog improvements. Copyable version text, do not dialog on mouse-clicks and focus losing, explicit button at the bottom of dialog and disabled button on OS X.. GUI: when re-assigning shortcuts. GUI: default focus button in message-box dialogs. GUI: settings dialog which is opened if the network settings need to be changed at VM startup. GUI: crash during VM start if an early error message needs to be shown, for example Linux kernel modules not present. Bridged Networking: handling of guest DHCP requests without UDP checksum when bridging to a wireless interface. Audio: latency. Guest Control: correctly set. USERNAME and. USERPROFILE environment variables (Windows guests only). Guest Control: several. API: properly restore NAT port forwarding rules when reverting to a snapshot. Parallel ports: Several allowing to enable two parallel ports for a VM. VBoxManage: wrong output of. devm show command. VBoxManage: hang when specifying logging groups with. devm log starting with. h, for example. hex. Windows hosts: renamed VBoxStartup.log to VBoxHardening.log and provide this log file in the GUI log viewer. Windows hosts: a small memory leak in the Windows host interface driver (VBoxNetAdp) which caused a BSOD if the driver verifier is enabled. Windows hosts: a failure to start VMs on hosts where dsound.dll is not available. Windows hosts: another for. VERR_LDR_MISMATCH_NATIVE errors. Windows hosts: host-to-guest communication with bridged networking. Windows hosts: broken data receiving from the serial device with the named pipe backend if Kaspersky AV is installed. Linux hosts: Linux 4.3 compile. Linux hosts: installer for certain systems. Linux hosts / guests: native systemd support for the host/guest installer scripts. The scripts for re-compiling the kernel modules are now located at /sbin/rcvboxdrv (host) and /sbin/rcvboxadd (Guest Additions). Mac OS X hosts: GUI-related for El C
5.0.410 Sep 2015 06:05 minor feature: VMM: an with Windows 10 guest kernel deging over the network for Hyper-V paravirtualized VMs VMM: a which prevented reading the saved state of the 'PATM' unit from VirtualBox 4.3.x. GUI: changed default OS type for Windows from Windows XP to Windows 7. GUI: added another pre-defined guest screen resolution. GUI: update check which was broken due to changing the location of the root certificates. GUI: with synchronization of Caps lock / Num lock / Scroll lock on Windows hosts. GUI: don't crash during VM shutdown if 2D video acceleration and 3D support are enabled (Mac OS X hosts only). GUI: several seamless for certain X11 window managers, also when used in multi-screen setups. GUI: Log window size, position and cursor-position. Audio: playing leftover/deprecated audio samples. Audio: playing audio after suspending the host (5.0 regression; Linux hosts using the ALSA backend). Audio: playing short audio samples which were chopped off formerly. Audio: distortions on OS X when the sample rate of the guest stream and host device don't match. Storage: raw disk access and flat VMDK image access which would be always opened readonly. Storage: initial encryption of VDI images after they were compacted. VGA: for certain graphics modes. NAT: don't freeze while the VM is paused if the network attachment mode is changed from/to NAT with activated port forwarding. OVF: duplicate USB controller entries in exported OVA/OVF. Shared Folders: a path separator. Drag and drop: crashes on OS X hosts when doing host-to-guest transfers. VBoxManage: another attempt to not deny changing the network adapter type at VM runtime. VBoxManage: broken. guestcontrol lt;VM-Name gt; list command (5.0 regression). VBoxManage: broken Guest Control stdout/stderr output (5.0 regression). Mac OS X hosts: remaining problems with activated SMAP. Mac OS X hosts: broken 3D support. Linux hosts: Linux 4.2. Linux hosts: don't crash on older Linux distributions if the DBus service isn't running. Windows hosts:
5.0.215 Aug 2015 20:25 major bugfix: VMM: added support for guest crash report MSRs with Hyper-V paravirtualization VMM: fixed an issue causing artifically high load averages on Linux hosts. VMM: fixed a kernel panic with thread-context hooks caused by incompatible changes made to Linux 4.2 kernels. VMM: fixed a saved state issue with VT-x/AMD-V disabled. VMM: fixed. VERR_SUPDRV_TSC_DELTA_MEASUREMENT_FAILED Guru Meditations on certain AMD CPUs. VMM: fixed a crash while creating a guest core dumps via the VM debug facility (5.0 regression). VMM: This release has AVX2 passthrough disabled on every host and AVX passthrough disabled for 64-bit VMs on 32-bit hosts. This will be properly fixed in a future 5.0.x maintenance release. GUI: fixed rare hang and crash on VM shutdown/poweroff. GUI: X11: fixed few crashes caused by the Qt. alien widgets feature. GUI: X11: fixed various mini-toolbar geometry quirks like positioning, z-order, transiency issues on certain window managers. GUI: X11: fixed mini-toolbar minimize button issue under certain window managers. GUI: VM menu actions availability should now be properly updated on full-screen/seamless/scaled mode switches. GUI: disk encryption password validation should be performed when user confirmed the password, not after each entered symbol. GUI: do not change the VM/group selection in the VM Manager to the newly created VM if it was created by another client (e.g. VBoxManage). GUI: Mac OS X: do not treat 'almost maximized' VM windows as 'maximized', watch for the strict window geometry instead. GUI: improve the quality in scaled mode under some circumstances. VBoxManage: do not deny changing the network adapter type at VM runtime. VRDP: allow Windows 10 RDP clients. Audio: fix a possible crash on VM process termination (5.0 regression). Storage: improved raw disk access on OS X by unmounting any accessed volume before first use and prevent any mount attempt by the host. 3D: basic support for saving/restoring display lists. Drag and drop: fixed guest to host
5.010 Jul 2015 17:45 minor feature: Paravirtualization support for Windows and Linux guests to improve time-keeping accuracy and performance (see the manual for more information) Make more instruction set extensions available to the guest when running with hardware-assisted virtualization and nested paging. Among others this includes: SSE 4.1, SSE4.2, AVX, AVX-2, AES-NI. POPCNT. RDRAND and. RDSEED. xHCI Controller to support USB 3 devices (see the manual for more information). Drag and drop support (bidirectional) for Windows, Linux and Solaris guests. Disk image encryption (see the manual for more information). VMs can now be started in separate mode. The VM process is started headless while the frontend runs as a separate process which can be terminated without stopping the VM. GUI: VM guest-content scaling support (including 3D acceleration). GUI: New User Interface settings page for customizing status-bar, menu-bar and guest-content scaling. GUI: New Encryption settings tab for customizing encryption options for disk images. GUI: HiDPI support including application icons and optional unscaled HiDPI output on Mac OS X (including 3D acceleration). GUI: Hotplugging support for SATA disks. New, modular audio architecture for providing a better abstraction of the host audio backends. Support for the NDIS6 networking framework on Windows (default on Vista and later).
4.3.2814 May 2015 16:05 minor feature: VMM: fixed a Guru Meditation when rebooting certain guests (for example Solaris doing fast reboot) by fixing the implementation for INIT IPI VMM: added some information for diagnosing rare. VERR_VMX_INVALID_VMXON_PTR Guru Meditations (VT-x only). GUI: HID LEDs sync: prevent synchronization if VM window has no focus (Windows and Mac OS X hosts only). GUI: fixed drag and drop moving the cursor between guest screens on certain hosts. 3D: fixed a crash on restoring the VM state on X11 hosts. 3D: fixed a crash on Linux guest shutdown. VRDP: fixed incompatibility with rdesktop 1.8.3. VRDP: fixed listening for IPv6 on some systems. Storage: don't crash if creating an asynchronous I/O context fails (e.g. when starting many VMs) and show a proper error message. Floppy: several fixes. Audio: improved the behavior of the volume control for the HD audio device emulation. USB: increase the number of supported drivers from 3 to 5 (Windows hosts only). PS/2 keyboard: synchronize the LED state on VM restore (Windows and Mac OS X hosts only). NAT Network: when running multiple NAT networks with multiple VMs, only stop the respective services when stopping VMs. NAT: don't kill UDP bindings on ICMP errors. NAT: bandwidth limit now works properly with NAT. BIOS: fixed the returned size value of the VBE 2.0 PMI function 0Ah. Guest Control: fixed parameter quoting in Windows guests. Webcam passthrough improvements for Linux (V4L2) hosts to support more webcam models. API: don't fail starting a VM with. VBOX_E_INVALID_OBJECT_STATE under certain conditions. API: be more verbose on. VBOX_E_INVALID_OBJECT_STATE if a medium is attached to a running VM. API: fixed a bug which could result in losing certain screen resize events with multi-monitor guests. rdesktop-vrdp: fixed path to the keymaps. rdesktop-vrdp: switch to version 1.8.3. Windows hosts: more hardening fixes. Linux hosts: another fix for activated SMAP on Linux 3.19 and newer. Linux hosts: Linux 4.1 compile fix. Solaris hosts: fixed
4.3.2618 Mar 2015 17:05 minor feature: GUI: in the snapshots pane, protect the age of snapshots against wrong host time. NAT Network: fixed a bug which prevented to propagate any DNS name server / domain / search string information to the NAT network. NAT Network: don't delay the shutdown of VBoxSVC on Windows hosts Mouse support: the mouse could not be moved under rare conditions if no Guest Additions are installed. Storage: if the guest ejects a virtual CD/DVD medium, make the change permanent. VGA: made saving secondary screen sizes possible in X11 guests. SDK: fixed the VirtualBox.tlb file. rdesktop-vrdp: make it work with USB devices again. USB: fixed a possible BSOD on Windows hosts under rare conditions. iPXE: enable the HTTP download protocol on non-Linux hosts. Mac OS X hosts: don't panic on hosts with activated SMAP. Linux hosts: don't crash Linux 4.0 hosts.
4.3.2404 Mar 2015 00:05 minor feature: VMM: emulation fix for the ENTER instruction under certain conditions; fixes Solaris 10 guests (VT-x without unrestricted guest execution). VMM: fix for handling NMIs on Linux hosts with X2APIC enabled. NAT/NAT Network: fix connection drops when the host's DHCP lease was renewed. NAT: don't crash on an empty domain list when switching the DNS host configuration. PXE: re-enable it on Windows hosts. Shared Folders: fixed a problem with Windows guests. Audio: improved record quality when using the DirectSound audio backend. VBoxManage: when executing the controlvm command take care that the corresponding VM runtime changes are saved permanently. Windows Installer: properly install the 32-bit version of VBoxRes.dll on 32-bit hosts. Linux hosts / guests: Linux 4.0 fixes. OS/2 Additions: fixed mouse integration. X11 Additions: fixed a sporadic failure to deactivate virtual screens.
4.3.2213 Feb 2015 23:25 minor bugfix: VMM: refined measurement of TSC frequency on the host, improves timekeeping for guests. VMM: decreased CPU load resulting from guest MMIO writes to the virtual APIC. VMM: fixed interception of debug exceptions, observed while using the dbx debugger on Solaris guests (VT-x only). GUI: 3D overlay window positioning code improved, fixed potential misplacement of 3D accelerated guest graphics content. GUI: fixed accident SSL authentication failures during update check on Windows hosts. GUI: never send the "ACPI power" keyboard scancode to the guest, we have the ACPI power button for that. GUI: was unable to properly restore seamless mode VM from snapshot/saved-state under some circumstances. VBoxHeadless: don't crash if 3D is enabled in the VM settings. ATA: fixed several passthrough issues (bugs #12310, #1360). Audio: fixed DirectSound failure when the the host has no audio input device (Windows hosts only; bug #9205). SB16: fixed compatibility issue. Storage: fixed broken CD/DVD passthrough when using the IDE controller. NAT: new ping proxy for Windows hosts. NAT: Properly report outbound connect(2) failures to guest with TCP RST or ICMP. NAT Network: no need for frequent wakeups in VBoxNetDHCP and VBoxNetNAT. Host-only adapter: prevent Windows from creating an "Unidentified network". Bridged Networking: don't leak host-to-guest traffic to the wireless network when bridging to a wireless interface. Main: fixed a possible race when changing the medium leading to a deadlock under rare conditions. VBoxManage: fixed return code if starting a VM failed. API: fixed 2 deadlock opportunities related to medium handling (bugs #13789, #13801, thank you Alexander Urakov). API: fixed bug in XPCOM which created too few worker threads, sporadically resulting in a deadlock. SDK: fixed a garbage collection leak in the Python VirtualBox webservice API binding. Linux hosts: fixes for activated SMAP (Broadwell and later, bug #13820). X11 guests: prevent unwanted hiding of guest screens o
4.3.2022 Nov 2014 03:16 minor feature: VMM: fixed reboot hang of 32-bit Windows SMP guests (bug #13319, #13462) VMM: proper Math Fault handling with certain legacy guests (bug #9042, AMD hosts) VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT on older CPUs that don't support MSR-bitmaps (VT-x only; bugs #13034, #13125, #13311, #13425, #13426, #13463, #13585) GUI: fix 3D overlay window re-parenting issue when VM goes to full screen mode on X11 hosts. GUI: fix occasional loss of focus in full-screen mode on X11 host systems (4.3.16 regression) GUI: Mac OS X: wizards should have Cancel button (bug #12541) GUI: added a global option to prevent automatic raising of the new window by mouse move with multi-screen guests (bug #8878) API: accept remote display port 0 as the default RDP port (bug #8534) VBoxManage: fixed crash when executing showvminfo command under certain circumstances (bug #13190) ACPI: fixed occasional Guru Meditations in ACPI timer code (4.3.18 regression; bug #13521) EFI: improved performance of IDE disk access EFI: fixed a bug in the EFI video driver which prevented Windows to boot in UEFI mode (bug #12022) EFI: properly announce the amount of RAM for big VMs (bugs #11103 and #13211) Storage: fixed a crash under certain circumstances when a medium was ejected from a drive attached to the SATA controller without inserting a new medium before pausing or closing the VM (4.3.16 regression) Storage: fixed an interrupt acknowledge issue causing hanging guests or slower I/O (4.3.18 regression) Storage: fixed broken resume after the VM was suspended due to a full disk if host I/O caching is used Storage: fixed a Guru Meditation under certain conditions when using the DevLsiLogic controller with VMs running in raw mode (4.3 regression; bugs #12254, #12655, #12709, #12774, #12886) Guest Control: fixed a bug which might lead to a crash during recursive copy SDK: Java COM bindings fixes iPXE: enable the HTTP download protocol (bug #13628) Runtime: do not use a fixed stack size creating temporary thre
4.3.1811 Oct 2014 03:16 major bugfix: VMM: fixed a potential misbehavior after restoring the A20 state from a saved state GUI: fixed full-screen mode mini-toolbar related regressions for different platforms and window managers (bug #13369) GUI: X11: fixed full-screen mode Unity panels quirk caused by mini-toolbar code changes in last release (bug #13365) GUI: X11: added possibility to use legacy full-screen mode as the new one can cause multi-screen issues under Unity, see the manual for more information (bug #13365) GUI: Mac OS X: fixed full-screen mode artifact causing black screen when 3D acceleration was enabled on 10.10 Yosemite hosts (bug #13448) GUI: Mac OS X: fixed regression in user-space swiping from/to VBox in full-screen mode GUI: Mac OS X: fixed issue with switching to VBox in full-screen mode through Alt+Tab and Mission Control Storage: fixed data corruption when resizing huge VHD images under certain circumstances (bug #11960) Storage: fixed a rare hang during startup when the BIOS enumerates the storage devices attached to the SATA controller Storage: follow the spec with AHCI interrupt acknowledge (bug #13474) Storage: fixed broken iSCSI authentication (4.3.14 regression, bugs #13386, #13435) NAT Network: properly parse port forwarding rules to allow UDP rules USB: fixed a crash on Linux hosts with older Linux kernels (bug #13400) and several other fixes ACPI: fixed ACPI timer anomalies (bug #12076) Guest Control: fixed a memory leak (bug #13434) Main: when removing a VM, do also remove the VBoxStartup.log file which might exist on Windows hosts (bug #13478) Windows hosts: fixed more startup problems on certain Windows hosts due to conflicts with anti-virus software; better error reporting (4.3.14 regression; bug #13187) Windows hosts: propagate the process startup information to the child process (4.3.14 regression; bug #13243) Mac OS X hosts: don't force using the discrete GPU (bug #11111) Windows Additions: some Windows 10 tweaks X11 guests: fix a bug handling video driver display pr
4.3.1610 Sep 2014 18:50 minor bugfix: VMM: fixed restoring 32-bit FPU state on 64-bit capable VMs and restoring guest FPU in raw-mode VMs (bug #12646; 4.3 regression) GUI: properly restore normal/scale mode guest-screen size after exiting full-screen/seamless mode GUI: mini-toolbar should provoke less artifacts/conflicts with 3D guest rendering GUI: Mac OS X: Native full-screen multi-screen transition was able to blackout host-screens for nearly minute GUI: X11: Modern window managers should now use native full-screen multi-screen mapping API GUI: added extradata item for configuring the mouse capture behavior, see the manual for more information (bug #3506) Storage: fixed a VBoxSVC crash when querying an iSCSI target with authentication configured (4.3.14 regression) Storage: fixed a rare data corruption during reads if another allocating write is running concurrently and accesses the same range Storage: fixed a rare crash for certain VHD images from other products Storage: fixed a rare release assertion when using the AHCI controller Floppy: fixed read errors and guest memory corruption when running under control of QEMM 3D: added experimental support for rendering on offline GPUs for Mac OS X host 3D: fixed white window appearing on entering FullScreen mode on OSX host 3D: fixed video recording support for 3D data regression (bug #13073) 3D: fixes for MS Office 2013 support 3D: several fixes Bridged Networking: improved IPv6 support when bridging to a wireless interface NAT: prevent internal DNS service from stuck in host-resolver mode when host was switched from one network to another one while host was sleeping (Mac OS X hosts) NAT: preserve DF (if possible) and TOS when proxying outbound UDP datagrams (bugs #9440, #12309) NAT: don't let multicast datagrams out (bug #7338) NAT: fixed handling of large incoming UDP datagrams on Windows hosts (bug #12136) NAT: fixed handling of the RFC 1533 DHCP PAD option NAT Network: fixed inbound half-close on Windows ho