Windows · Virtualization & Android Emulators
VirtualBox for Windows
Oracle's free, open-source desktop hypervisor for running Windows, Linux, and other guest operating systems in a virtual machine.
Updated August 9, 2026 · Reviewed by SoftNexi Editorial Team, Software research and documentation
Overview
VirtualBox is a free, open-source type-2 hypervisor from Oracle that lets you run a full guest operating system — another Windows install, a Linux distribution, or older legacy systems — inside a window on your host machine. It's one of the most widely used free virtualization tools for desktop testing, software evaluation, and running operating systems you don't want to install on real hardware.
It suits hobbyists, students, and developers who want to test software across OS versions, try Linux distributions without dual-booting, or keep an isolated environment for potentially risky downloads. Its Guest Additions package adds shared folders, clipboard sharing, and better display resolution once installed inside the guest OS.
Compared to VMware Workstation, VirtualBox is fully free (including the base package; the separate Extension Pack has its own licensing terms) and open source, while VMware generally offers better performance and 3D graphics support for demanding workloads. Compared to Hyper-V, VirtualBox runs on a wider range of host operating systems and is easier for casual users to configure, but the two cannot run their virtual machines at the same time on the same Windows PC without configuration changes.
Windows' Hyper-V and Windows Subsystem for Linux (WSL 2), when enabled, put the machine into a hypervisor mode that can prevent VirtualBox from starting its own VMs or force it into a slower fallback mode; this is a common source of "VirtualBox VM won't start" problems on Windows 11.
Key features
- Run multiple guest operating systems as virtual machines on one host
- Snapshot support to save and roll back VM states
- Shared folders and clipboard sharing via Guest Additions
- Virtual networking modes including NAT, bridged, and host-only
- Command-line management via VBoxManage for scripting and automation
- Import/export of virtual machines in the OVF/OVA format
System requirements
- Operating system
- Windows 11 and Windows 10 (64-bit); also available for macOS and Linux hosts
- Virtualization
- Hardware virtualization (Intel VT-x/AMD-V) enabled in BIOS/UEFI
- Conflicts
- May conflict with Hyper-V or WSL 2 when both are active on the same machine
How to install VirtualBox
1. Download the installer
Get the Windows host installer from virtualbox.org/wiki/Downloads.
2. Run setup
Complete the installer, which may briefly interrupt network connectivity while installing virtual network adapters.
3. Create a virtual machine
Use the New VM wizard, allocating memory and disk space for your guest operating system.
4. Install Guest Additions
After installing the guest OS, install Guest Additions from inside the VM for better display and shared folder support.
How to use it
1. Attach an installer ISO
Mount your guest OS's installation ISO to the VM's virtual optical drive before first boot.
2. Take snapshots
Snapshot a VM before risky changes so you can roll back if something breaks.
3. Configure shared folders
Set up a shared folder to move files between host and guest without networking.
4. Adjust resource allocation
Tune CPU, memory, and video memory settings per VM to balance performance against host resource use.
Safety and privacy
- Download only from virtualbox.org/wiki/Downloads.
- Guest operating system ISOs must come from their own official sources — VirtualBox only provides the virtualization layer, not OS images.
- Bundled software
- The base installer does not bundle unrelated third-party software. The separate Extension Pack adds features like USB 3.0 support under its own license.
- Privacy
- VirtualBox does not require an account and does not transmit personal data by default.
Known risks
- Enabling Hyper-V or WSL 2 on the same Windows installation can prevent VirtualBox VMs from starting or force a slower software-virtualization fallback.
- Running an outdated Guest Additions version after a VirtualBox update can cause display or shared folder issues inside the guest.
What's new
Current release
Oracle updates VirtualBox periodically with new guest OS support and bug fixes. Check the official changelog on virtualbox.org for details on your installed version.
Pros and cons
Pros
- Completely free, open-source base package
- Runs on Windows, macOS, and Linux hosts
- Snapshot and shared folder features make testing convenient
- Large community and long track record
Cons
- Can conflict with Hyper-V or WSL 2 on the same Windows machine
- Generally lower performance and weaker 3D graphics support than VMware Workstation
- Extension Pack has separate licensing terms from the base product
- Interface feels dated compared to some commercial competitors
Verdict
VirtualBox remains a solid, genuinely free choice for running virtual machines on Windows, especially for testing and learning. If you need better performance for demanding workloads, or if Hyper-V conflicts become a persistent headache, VMware Workstation or native Hyper-V may serve you better.
Frequently asked questions
Is VirtualBox free?
Yes, the base VirtualBox package is free and open source under the GNU GPLv2; the separate Extension Pack has its own license terms worth reviewing for commercial use.
Why won't my VirtualBox VM start on Windows 11?
This is commonly caused by Hyper-V or WSL 2 being enabled on the same machine, which can prevent VirtualBox from accessing hardware virtualization the way it needs.
Does VirtualBox run on Windows 11?
Yes, VirtualBox supports Windows 11 and Windows 10 as host operating systems in 64-bit editions.
Do I need to buy a Windows license to run Windows as a guest?
Yes, running a licensed copy of Windows inside a VM generally still requires a valid Windows license, same as installing it on physical hardware.