VirtualBox is a free, open source virtualization program from Oracle for the x86/x86_64 architectures.

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CentOS 7 Virtualbox VM SSH Connection Suddenly Refused

I am new to linux and am working with a minimal CentOS 7 installation on a VM running on Virtualbox with a Win10 host. Up until today, I was able to use PuTTy and WinSCP to SSH into the VM from the ...
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6 views

Virtualbox Win7 guest on Linux host can't see Internet when host connected via wifi extender

I have a Windows 7 VM set up as a guest in VirtualBox 5.2.16-123759 running on Ubuntu 16.04.4. The VM is configured to access the Internet using the host's wifi device as a bridged adapter. When the ...
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14 views

VirtualBox suddenly returning Hyper-V errors, despite hyper-v being disabled

I've encountered a recent issue in VirtualBox. It's recently started giving me errors such as: VT-x is not available(VERR_VMX_NO_VMX). On another one of my virtual machines it says: Raw-mode is ...
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6 views

Clipboard in VirtualBox at login dialog

I have a Linux Host (Fedora 28) with a Windows 7 VirtualBox Guest. Clipboard works fine but it isn't available at login time. So it's a pain, I have to type a very very long password... Is there a way ...
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49 views

Completely isolating my VM from my host machine

I'm scam-baiting fake tech support people (like the ones who ask you to go to 7/11 and buy $200 Google Play gift cards for payment after running netstat and saying that you've been hacked). Most of ...
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45 views

Virtualbox consuming all of my memory

System specs are as follows:62.8GB of RAM1TB of Hard drive space - Samsung 960 Pro M.2CPU is an AMD Threadripper 1950x - 16CoreRunning Ubuntu 17.10Virtualbox 5.1.34_Ubuntur121010So I started ...
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15 views

Steps to use Zabbix in Virtualbox

I can not find concise instructions for using the Zabbix preconfigured VM on a windows host using VirtualBox.I tried doing it by following intuition by downloading VirtualBox from here:https://www....
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20 views

FFmpeg 4 versus version 2.2 very slow transcodes in VMWare CentOS 6 container

Whist using "ffmpeg version n4.0.1" I've noticed that on CentOS6 host within a VMware container the video transcoding takes almost twice as long as "ffmpeg version 2.2.1".Benchmarks below, ran 3 ...
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32 views

Resizing VirtualBox's disk size

I have a VM (VirtualBox) and its disk partitions are set up like this:$ df -h Filesystem Size Used Avail Use% Mounted onudev 979M 0 979M 0% /devtmpfs 200M 24M ...
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17 views

The vm do not share clipboard with my Mac [duplicate]

I have VirtualBox in my Mac, my vm ubuntu running on it, and the vm's settings Shared Clipboard is Bidirectional, but when I copy text in Mac, I can not past to the vm's terminal, vice-versa. They do ...
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2answers
17 views

VirtualBox display ratio 26:9, not 16:9

I have Ubuntu 16.04LTS and just upgraded my VirtualBox to 5.2.12 with the new guest additions. Before, I had a nice Windows client that had a 16:9 display ratio, perfect for filling my 27" monitor. ...
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39 views

Virtual Box window size and position freezes after a while

I have just installed Virtual Box version 5.2.14 r123301 (Qt5.6.2), including the VirtualBox Extension Pack, on my Windows 10 Pro machine.The guest OS is Ubuntu 16.04 LTS with Guest Additions ...
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25 views

Check Point VPN client alternatives

On Windows I can connect to a VPN with the Check Point Endpoint Security client.However, since my main desktop is Ubuntu 18.04 I found an alternative client (SNX) which worked until some weeks ago. (...
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14 views

Weird Black Borders when trying to play a game on Win 7 VM Virtualbox

I have spent multiple hours thoroughly searching for my problem on Google, this forum, and other relatable sources and couldn't find a solution. This is a desperate cry for help. I'd really appreciate ...
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15 views

use my VM as local LAN device on the same network

I have arch linux on my virtual box VM and base mechine is MAC OS so iwant to use that VM as a LAN computer on my network on the same network currently it is using NAT how to accomplish this task
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8 views

Vagrant box Debian/Stretch64 is not syncing in real time

I have been trying to use the debian/stretch64 box from Vagrant but its real-time sync does not work.Here is the code of my Vagrantfile:# -*- mode: ruby -*-# vi: set ft=ruby :HOSTNAME="...
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1answer
74 views

How do I reboot a Vagrant guest from a provisioner?

Relative newcomer to Vagrant here, trying to eliminate going through the install process manually every time I want to spin up a new Ubuntu VM.My usual process, after completing the install, is to ...
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1answer
19 views

How to extend root partition on LVM in VirtualBox with snapshots

I'm running Fedora 28 in VirtualBox with a 200GB virtual drive.After a few months I ran out of disk space on the root partition.Here's what I tried to extend it:"c:\Program Files\Oracle\...
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1answer
41 views

Can you RDP into multiple machines in the same router from the internet with all machines using default RDP port 3389?

Can you RDP into multiple machines in the same router from the internet with all machines using default RDP port 3389?Basically, my work has all unnecessary outgoing ports blocked. 3389 (default RDP)...
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7 views

Vagrant + VirtualBox + Ruby application CPU >100%

Problem: CPU usage hits over 100% after doing anything with bundle exec ... in the virtualbox guest. In ActivityMonitor it's hitting 145% in the Virtual environment it's more like 60-70% but still ...
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1answer
33 views

Virtualbox Frequently crash when not active for some time

All,I recently got an updated laptop from thinkpad to HP, with all the latest hardware, double memory and disk compared to the old laptop. But after used it several days. I found that the VM ...
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1answer
13 views

Join VM to Windows Domain using VPN

This seems basic and common but I cannot find anything helping me with this, surprisingly.Question: anything special to do in a VM to enable VPN connection in the guest?Context: I have a Windows10 ...
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21 views

virtualbox audio input not working

I have VirtualBox 5.2.14 r123301 on a Windows 10 x64 host machine. There I have a Windows 8.1 x64 Virtual Machine. No matter what audio input is not working, it's always silence. I tried to switch to ...
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31 views

Virtualbox shutdown screen effect

When user tries to close virtual machine Virtualbox adds that nice greyed out effect on the virtual machine screen. Here's what I mean":How such effect is called? I tried to search for it but ...
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1answer
55 views

Blinking Cursor when trying to install Xubuntu in VirtualBox

I'm attempting to get an Xubuntu VM running with VirtualBox 5.2.14 on Windows 7 (Lenovo E550). I downloaded an Xubuntu iso which I believe is 32bit (18.04-desktop-i386).Here were my VM settings. ...
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2k views

Higher version of guest OS Virtualbox on Lower version of native Host OS.

Is it possible to create virtual machine using virtual box running Windows 10 and the actual physical machine OS running older version i.e., windows7
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17 views

How to disable a virtualbox nic when not in use to stop it sucking power?

I'm using powertop to see what's eating battery.A massive chunk is apparently going on nic:vboxnet0 which I do need when I fire up my VMs, but when they're not in action, I don't need to be spending ...
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17 views

Mounting LUKS LVM encrypted ext4 external SSD on Ubuntu 18.04 VM

I have a Windows 10 Host running a Ubuntu 18.04 Guest with VirtaulBoxI would like to be able to plug in a LUKS LVM encrypted ext4 external SSD and unlock it and read it within the Ubuntu VM.Is ...
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5 views

How can I get UPNP with Vagrant

I have an application that tries to open a port via UPNP. I managed to get it to work on one of my virtualbox vms with bridged network, but I can't get it to work with vagrant (config.vm.network "...
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49 views

After Windows update, can’t login to Samba share on CentOS VM

I have a CentOS VM, running as a guest in VirtualBox on a Windows 10 host.I have set up a Samba share in CentOS and configured it to work using host-only adapter created in VirtualBox->setting->...
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40 views

VirtualBox suddenly stopped working on Ubuntu 16.04

I've been running VirtualBox 5.2.4 with no problem for months on Ubuntu 16.04. Today it wouldn't start and recommended running /sbin/vboxconfig which failed. It complained about the permissions on ...
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67 views

Move Windows 7 (OEM) into Virtualbox on ubuntu

I got a laptop with pre-installed windows 7, and kept using this for some time along with ubuntu in dual-boot-mode. Now I want to move the windows-7-installation into a virtual-box, running in ...
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2answers
39 views

VirtualBox with Win10 host / Linux guest, how to share files with full unix semantics

I have Windows 10 running on a laptop that runs VirtualBox that runs a Linux guest.I do a lot of programming for the Linux environment and am working with sourcecode repositories sitting in an FS / ...
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40 views

Android running within Virtual Box can't reach the Internet

I'm running Android within Virtual Box and I'm trying to configure NAT in the host machine (Ubuntu Linux) so that the VM has access to the Internet.In the Android guest I did:ifconfig eth0 192.168....
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69 views

How can I easily find the public LAN address of a Virtual Box VM in a public environment?

I’m using VirtualBox on Arch Linux and I’m learning some hacking stuff using OVA’s from VulnHub, imported into VirtualBox. Most times I generate a hackable webserver with an IP address, which I can ...
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30 views

Virtual Machine CPU allocation with multiple virtual cores

I'm rather new to the field and Stack Exchange, but I'll try to make this question not garbage. This has really been bugging me recently, because I'm trying to set up something on a VPS and The ...
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1answer
42 views

Can a virus break out of a Virtual Machine and infect the host [duplicate]

I would like to download a file but I am not sure if the file has a virus in it, so I have decided to use a vm to access the website, the question now is this, assuming the file has some kind of virus ...
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51 views

How to change the path to the installation disk image in VirtualBox?

I made a stupid mistake when setting up a new VM by accepting the default path to the installation media (D:). Of course, it failed to boot.When I restart it, it does not re-prompt me for the media, ...
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44 views

ubuntu + cinnamon + virtualbox - software rendering or no menu bar

I'm trying to get Cinnamon (3.6.7) running on Ubuntu (18.04) in my VirtualBox (5.2) which is running on Windows 10.If I use the "default" setup of VirtualBox, Cinnamon gives me a warning that it is ...
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70 views

Hardware Acceleration isn't working in Google Chrome inside Debian VM

I am having an issue where Google Chrome's hardware acceleration is not working in Google Chrome inside a Debian VM.3D Acceleration is enabled in Virtualbox's configuration for Debian. macOS the ...
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62 views

Can connect to all but one file share; ping works [migrated]

I'm running Windows 10 32 bit in a VirtualBox machine. I'm connected to our company's domain, and I can connect to the internet and most file shares. I can connect to our domain controller (also ...
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1answer
33 views

How do I enable VT-X on a Surface Book 2? WIN 10, i7-8650U

The processor is an Intel i7-8650U, it supports vt-x. You can boot into the "BIOS" by shutting down and then booting while pressing the volume up button; stop pressing once the Windows logo appears. ...
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46 views

Can't SSH to VirtualBox guest Debian Stretch with VPN

I have a problem which I can't solve.I have a VPN set up on my host. I can SSH to the host no problem.This means I was able to allow SSH on a server with an active OpenVPN client.However I can't ...
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1answer
156 views

Virtual Box With Arch Linux Host & Windows 10 Guest: Guest Does Not Support Native Resolution

I use Arch Linux (Kernel: 4.17.2-1-ARCH) with Gnome 3.28.2. Along with Virtual Box I have installed the following packages: virtualbox-host-modules-arch 5.2.12-10virtualbox-guest-modules-arch 5.2....
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26 views

Is it possible to connect a virtual machine (VirtualBox) to the internet using the host machine as gateway?

I have installed a VirtualBox machine on my Windows 10. I want to connect to the internet through a ethernet connection.The problem is that I don't know the password for this network, but my host ...
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33 views

how to install Virtualbox Guest Additions for open edX?

I'm trying to install open edX devstack ginkgo release on my ubuntu 16.04 but there are many errors. I followed this:http://edx.readthedocs.io/projects/edx-installing-configuring-and-running/en/...
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31 views

Connection errors on hack the box and vulnhub (Kali, virtual box)

Ill start by show my attacking machine network setup:When trying to do a box on HTB or Vulnhub, I am sometimes able to ping it (nmap -Pn). Once I am able to ping a machine, I do a full nmap scan. ...
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20 views

“VboxManage debugvm dumpvmcore” error

I'm trying to make an .elf file with VboxManage.exe using the command:C:\Program Files\Oracle\VirtualBox>VBoxManage.exe debugvm "win8.1" dumpvmcore --filename="%userprofile%\desktop\mem.elf"I'm ...
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2answers
32 views

Can I build a system image in Virtualbox then restore the image to another computer?

This is for Windows 10I'm pretty new to VirtualBox, but I got the idea that maybe I could :Install programs, change the drive layout, etc. in VirtualBoxMake a system image (universal?)And use ...
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1answer
57 views

Mounting a raw hard drive read-only in Virtualbox

Is it possible to give a VirtualBox VM read-only access to a physical HDD? I've read up on the createrawvmdk documentation, but it seems that it can only give it full read-write access.

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