Running a virtual machine is a standard procedure for developers, testers, and advanced users who need to isolate processes or work with other operating systems without leaving the main environment. Oracle VM VirtualBox remains one of the most popular solutions due to its free, open source and wide compatibility. However, in the operating system Windows 10 The installation and initial startup process may encounter a number of specific limitations related to Microsoft's built-in security features.
The main difficulty that users encounter when trying to launch virtualization lies in the conflict of technologies. Hypervisor VirtualBox requires direct access to processor hardware resources, but often this access is intercepted by the system hypervisor Hyper-V or security features like Kernel Security. Understanding these mechanisms is essential to successfully configuring your environment. In this article, we will analyze not only the standard installation procedure, but also methods to work around typical errors that occur on modern builds of Windows 10.
Before getting into technical details, it is important to note that the success of the operation depends on proper preparation of the host system. Without virtualization enabled in the BIOS/UEFI, no emulation program will be able to work correctly. We will look at each stage sequentially, starting from checking the motherboard firmware settings and ending with fine-tuning the guest OS parameters. This will avoid most common problems at the start-up stage.
Checking virtualization support and BIOS settings
The first step before installing any virtualization software is to check the hardware support. Modern processors from Intel and AMD have built-in instructions for working with virtual machines, but by default they can be disabled at the BIOS or UEFI level. For Intel processors this technology is called VT-x, and for AMD - AMD-V or SVM Mode. Without activating these functions, running 64-bit guest systems will be impossible.
To check the virtualization status in Windows 10, it is not necessary to immediately restart the computer and go into the BIOS. You can use the built-in task manager. Press the key combination Ctrl + Shift + Esc, go to the Performance tab and select your processor. In the right part of the window, at the bottom, there will be a line “Virtualization”. If it says “Enabled,” then the hardware is ready for use. If "Disabled", you will need to enter the motherboard settings.
- 🔌 Restart your computer and enter BIOS/UEFI by pressing the key
F2,DelorF10during the start. - 🔍 Find the partition associated with the processor (often called
CPU Configuration,AdvancedorSecurity). - ⚙️ Activate the option Intel Virtualization Technology or SVM Mode (for AMD) by setting the value
Enabled. - 💾 Save changes by selecting
Save & Exit, and wait for Windows to load.
⚠️ Attention: The BIOS interface varies greatly among different motherboard manufacturers (ASUS, Gigabyte, MSI). If you don't find the option you're looking for, check your model's documentation or search the Internet for the exact name of the feature for your board.
Downloading and installing Oracle VM VirtualBox
After confirmation of hardware support, you can start downloading the distribution. It is extremely important to download software only from the developer's official website to avoid introducing malicious code or using outdated versions. Currently, the current versions are the 7.x series, which are optimized to work with Windows 10 and Windows 11. The installation process is standard, but has several important nuances that are worth paying attention to.
After launching the installer, the system will warn you about a temporary network connection failure. This is normal behavior as the installer installs virtual network drivers. In the component selection window, it is recommended to leave all items by default, especially “USB Support” and “Networking” if you plan to use peripherals and the Internet inside the virtual machine. You can only disable desktop shortcuts if they bother you.
During the installation process, you may receive a warning about incompatibility with Hyper-V. In modern versions of VirtualBox, this conflict has been partially resolved, but for maximum performance and stability it is better to ensure that the native Microsoft hypervisor does not take control. If you are not using Docker or WSL2, you can temporarily disable Hyper-V. If these tools are needed, VirtualBox versions 6.x and higher are capable of running in compatibility mode, although with some reduction in performance.
☑️ Installation checklist
Resolving conflicts with Hyper-V and other hypervisors
One of the most common reasons why a virtual machine fails to start is the active status of the Microsoft virtualization platform. Even if you haven't explicitly enabled Hyper-V, it may be enabled along with other components such as Windows Sandbox or Virtual Machine Platform. This results in an error VT-x is not available or VERR_VMX_MSR_ALL_VMX_DISABLED when the guest OS starts.
To diagnose and resolve the conflict, you must contact Windows components. Open the Start menu, start typing "Turn Windows features on or off" and launch this Control Panel item. In the list that opens, you need to find and uncheck items related to Microsoft virtualization. After this, a complete reboot of the system is required, since changes in the kernel are applied only at startup.
If the standard shutdown via the GUI does not help, you can use the command line with administrator rights. Enter the command bcdedit /set hypervisorlaunchtype off and reboot. This action forces the hypervisor to boot. However, if you need WSL2 or Android emulator for development; you cannot completely disable the hypervisor. In this case, you should use VirtualBox version 6.1 and higher, which supports working on top of Hyper-V via the API Windows Hypervisor Platform.
| Windows component | Impact on VirtualBox | Recommendation |
|---|---|---|
| Hyper-V | Blocks direct access to VT-x/AMD-V | Disable if not used |
| Virtual machine platform | Conflicts with the VirtualBox kernel | Disable for maximum speed |
| Windows Sandbox | Uses the same hypervisor resources | Disable when working with VM |
| Core Isolation | Blocks low-level calls | Check in Security Center |
If you need to frequently switch between Docker (requires Hyper-V) and VirtualBox, create two .bat scripts to quickly enable and disable the hypervisor via bcdedit, so you don't have to do it manually every time.
Creating and configuring the first virtual machine
After successfully installing and configuring your environment, you can begin creating a virtual machine. Run Oracle VM VirtualBox and click the "Create" button. The creation wizard will prompt you to enter a machine name; Please note that the program will automatically determine the type and version of the operating system by name, but these parameters can be changed manually in accordance with the installed distribution Linux or Windows.
When allocating memory resources (RAM), it is important to maintain balance. Allocating too little volume will lead to slow operation of the guest OS, and allocating too much will slow down the main system (host). For modern GUI Linux distributions, a minimum of 2-4 GB of RAM is recommended, and for Windows 10/11 as a guest, at least 4 GB, ideally 8 GB if your computer's memory capacity allows.
The next important step is to create a virtual hard disk. The system will offer to create a new disk or use an existing one. Select create new, format VDI (VirtualBox Disk Image) and storage type "Dynamic". A dynamic disk only takes up physical disk space as it becomes full of data, saving space. Specify your desired maximum size, such as 50 GB or 100 GB, depending on your needs.
- 📂 Click the "Create" button and enter a name for your virtual machine.
- 💾 Select disc type VDI and select "Dynamic" size.
- 💻 Allocate RAM by moving the slider to the green zone.
- 📀 In the media settings, specify the path to the ISO image of the operating system.
Configuring virtual hardware settings
The basic configuration offered by default is often insufficient for comfortable work. Before the first start, you need to go to the “Settings” of the created machine. In the "System" section of the "Processor" tab, it is recommended to increase the number of processor cores. The default is one core, which is ineffective for modern operating systems. Dedicating 2 or 4 cores (but no more than half of the total number of physical cores of your host) will significantly speed up the guest system.
In the "Display" section, you need to increase the amount of video memory. The standard 16 MB is only enough for text mode. For GUIs Windows or Linux With desktop effects, select the maximum available with the slider (usually 128 MB). It is also worth enabling 3D acceleration here if the guest OS and applications will actively use the graphical interface. This will allow you to use the hardware resources of your video card inside the virtual environment.
⚠️ Warning: Enabling 3D acceleration may cause instability in some older guest OSes or specific applications. If the virtual machine starts to crash immediately after booting, try disabling this option in the display settings.
Don't forget to check your network settings. By default, the NAT connection type is used, which allows the virtual machine to access the Internet through the host, hiding behind its IP address. It is safe and convenient for most tasks. If the machine needs to be visible on the local network as a separate device, switch the connection type to “Network Bridge” (Bridged Adapter).
Why do you need 3D acceleration in VirtualBox?
3D acceleration allows the guest operating system to use the host computer's graphics card to render graphics. Without this, the Windows interface may be sluggish, animations will be jerky, and videos will be stuttered. However, this requires installing additional drivers inside the guest system.
Installing Guest OS and VirtualBox Add-ons
After completing the settings, click the "Run" button. If the ISO image was specified correctly, the installation process of the operating system will begin. It goes the same way as on a real computer: disk partitioning, copying files, initial setup. After installing the OS and logging in for the first time, you will see low screen resolution and lack of mouse integration (the cursor may get stuck inside the virtual machine window).
To fix this you need to install Guest Additions (Guest OS Additions). In the window menu of the running virtual machine, select “Devices” → “Mount Guest OS Additions disk image.” A virtual CD drive containing the installer will open inside the guest system. Launch it and follow the instructions. For Windows is a standard exe file for Linux You may need to run the script through a terminal with superuser rights.
Installing add-ons solves several critical problems at once: it becomes possible to change the size of the VirtualBox window with automatically changing the resolution of the guest OS (Auto-resize), configure the shared clipboard and Drag-n-Drop files between the host and the guest, and improve graphics performance. Without this stage, it’s difficult to call full-fledged work with a virtual machine.
- 🚀 Boot from the ISO image and install the operating system.
- 📀 From the menu, select
Devices → Mount Add-ons disk image. - 🖥️ Run the installer inside the guest OS and complete the installation.
- 🔄 Reboot the virtual machine to apply the changes.
Installing Guest Additions is a necessary step for a comfortable experience, as it ensures the correct screen resolution and input integration between the main and virtual systems.
Frequently asked questions (FAQ)
Why does VirtualBox give an error when starting a 64-bit system?
Most likely, virtualization (VT-x or AMD-V) is not enabled in the BIOS/UEFI, or it is intercepted by the Windows hypervisor (Hyper-V). Check your BIOS settings and disable Hyper-V components in the Windows Control Panel.
Can I play modern games through VirtualBox?
No. The virtual machine does not have direct access to the video card (GPU Passthrough on Windows is complex and unstable). 3D acceleration in VirtualBox is emulated in software and is only suitable for lightweight interfaces and older games, but not for heavy 3D projects.
How to transfer a file from Windows 10 to a virtual machine?
The easiest way is to use the Drag-n-Drop or Shared Clipboard feature, which becomes available after installing Guest Additions. You can also configure "Shared Folders" in the virtual machine settings.
Does the virtual machine take up disk space if it is turned off?
Yes, it takes up space equal to the amount of data written to its virtual disk. If you select a "Dynamic" disk, it will grow as it becomes full, but will not automatically shrink when files are deleted within the guest OS.