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

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VPN disables network after about 20 minutes

I've running a Windows 7 guest under VirtualBox. If (and only if) I run a VPN client such as Viscosity or the OpenVPN client, after about 20 minutes, they both stop working and it turns out that my ...
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1answer
181 views

What are the limitations of Vmware Player for Personal Use vs. Pro?

I'm trying to decide between using VirtualBox or Vmware's free (for non commercial user) Workstation Player I can't find out what a "restricted virtual machine" is anywhere. I currently have Vmware ...
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27 views

USB Failure on Yosemite VM

I am completely new to running Mac OS as a virtual machine. Please bear with my ignorance. I am desperately in need of help. I am running Yosemite within Virtual Box. I have two external USB ...
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0answers
140 views

Windows disallows connections to localhost (ERR_NETWORK_ACCESS_DENIED)

I have the following problem: Whenever I open http://localhost in my browser (doesn't matter which one, tested Google Chrome (49), Firefox, Edge, Internet Explorer), I'll get the message, that the ...
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2answers
113 views

Solution Virtualization not Supported, BIOS missing virtualization option?

In my system BIOS virtualization option is missing. After research found that my system doesn't support virtualization. Laptop model : HP DV6-1152TX Processor : Processor type - Intel Core 2 Duo ...
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50 views

IP Packets for one (VirtualBox/Vagrant Host-Only) guest IP are sent to Windows 10's default gateway instead of link local

I can't ping from my Windows 10 host (192.168.12.1) to one specific IP address (192.168.12.2) on a VirtualBox host-only network. The packet is sent to the default gateway (192.168.101.4) rather than ...
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29 views

Virtual Sound Card for Windows Server 2008 R2 SP1 x64 virtual machine

I have e2eSoft VSC - Virtual Sound Card successfully installed on my Windows Server 2008 R2 SP1 x64 virtual machine. It seem like driver works (new audio device in Device Manager group and VAC control ...
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2answers
94 views

Why does antivirus on my host machine act up when VirtualBox is infected with a virus?

I'm testing vulnerability and severity of certain viruses on my Oracle VirtualBox (Windows XP) and virtual machines internet connection is set to NAT. The issue is that my actual HOST PCs (Win10) ...
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2answers
48 views

Ubuntu on Virtualbox says 20 GB used when actual size of VDI is only 8 GB

I have a Guest Ubuntu 14.04 on Windows 7 Host. I've set the VDI limit to 20GB dynamically allocated. My Ubuntu boots to say there is zero space left in the system and sure enough df shows that this is ...
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1answer
49 views

Accessing VM's Web server from host OS

I'm running OS X on my computer, and I installed Windows 10 with VirtualBox. On Windows, I'm developing a server, which I can access (on Windows) by http://localhost:8080/. Now, I need to access it ...
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41 views

Using tcpdump to check if IPsec is working

I'm using two virtual machines to test a IPsec connection between them using Openswan. I already installed and configured IPsec in both machines. But now I'm trying to test if the encrypted ...
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0answers
25 views

Computer freezes when virtualbox VM is running and I attempt to start an application

This started happening recently for no clear reason. Whenever I have a virtualbox VM running, and I attempt to start any application (perhaps not any application, but at the very least firefox, ...
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27 views

CentOS Host serving Ubuntu VM

Need some help bridging CentOS NIC(physical) to a Ubuntu VM via Virtual-Box's bridging option. CentOS 7 is running on UCS behind proxy(http/https) environment. Trying to bridge through that interface ...
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2answers
68 views

run two VMs (VMWare Wst and Virtualbox) parallel at the same time

Is it possible to have two Virtual machines, one VMWare Workstation, one Virtualbox running at the same on one host? Or does this give strange behaviour?
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4answers
40 views

How large are Linux system files?

I'm looking to install Ubuntu (alongside pre-existing Win 8.1) but I'm wondering how much space is needed for the Ubuntu system file? cos right now I have only 20GBs left on my C:\ partition.. Also ...
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0answers
99 views

Installing Virtualbox 5.0/Vagrant on CentOS7. Ubuntu box not working

Here is the story: I tried to create an Ubuntu box with Vagrant on CentOS 7. This didnt work because I could not connect to the Box through SSH, the log indicates the box wont accept the IP. Log: ...
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0answers
15 views

provisioner running script as root instead of user

I am trying to install some software through a vagrant provisioner on a virtual machine. I can install the npm generator-hubot When the script gets all the way to yo hubot it gives me an access ...
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1answer
19 views

How to migrate a nested VM between Virtualbox guests?

I have two Virtualbox guests with Ubuntu 14.04 installed. Inside one of the guests, there is another VM (nested VM). I was wondering how can I migrate this nested VM to the second Vitualbox guest? I ...
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1answer
26 views

VirtualBox: Bridge VM to pseudo adapter

I have 4 VMs running on my host, using them as containers for stuff like my web applications. However, I currently am using NGINX as a reverse proxy - and the problems that come with that. So I ...
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23 views

Virtualization-enabled dual-boot linux with universal access to data folder/partition

My situation: I want to setup my work laptop as a Windows + Linux dual-booting system (probably Windows 7 and Ubuntu) with the possibility of running the Linux installation as a virtual machine from ...
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1answer
117 views

Can't give VirtualBox guest OS access to host physical LPT1 port

Preface: I've just put a 64-bit Windows 10 machine (a Dell Optiplex 760) in an office to replace an old 32-bit Windows XP PC. The PC needs to be able to print to a very old dot matrix printer - a ...
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1answer
131 views

I'm getting “Bad argument setup” while running VirtualBox on Linux

I'm trying to run Oracle VM VirtualBox, and I'm getting following error: # /sbin/rcvboxdrv setup Bad argument setup # cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) # uname -a Linux X ...
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1answer
103 views

Create a shared folder between Mac(Host) and Ubuntu(GUEST) on virtualbox

On my Mac I have virtualbox installed with Ubuntu. When I go into the settings of the virtual machine, under the section that allows you to create a Shared folder I select the folder I want to be ...
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2answers
160 views

Windows 10 + VirtualBox: Connect host from VM + VM to host not possible?

I'm not so familiar with virtualization. I could use it without problems on windows 7/8. Recently i want to use VirtualBox on my new Windows 10 laptop to try out a server: Kaa. They offer a sandbox ...
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12 views

Correcting the time of day clock of a restored VM

In VirtualBox, a VM's state can be saved and restored at a later point in time. This requires it to sychronise its time of the day clocks to the later time. How is this acheived, even when the OS in ...
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0answers
21 views

VirtualBox : Saving the state of a VM

How does VirtualBox save the state of a VM ? What are the HW requirements for such a feature ? I guess, saving the state also includes the values of CPU registers. How can the hypervisor not disturb ...
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1answer
58 views

Restoring Cloudberry Bare Metal Backup to Virtual Machine

I have a dead laptop from which I have a CloudBerry Bare Metal backup. I want to restore the image to a virtual machine. I used these instructions: ...
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35 views

Running VirtualBox on Fedora

I am trying to install VirtualBox on fedora 23 When trying to start a VM I get the error "Kernel driver not installed (rc=-1908)" My kernel version is 4.3.5-300.fc23.x86_64 I have tried following a ...
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17 views

CentOS DNS server not being able to be pinged by host, but can by other machines on the network

Currently I am running a CentOS 7 core on a vm in bridge mode in order to get my own dns server, but for some reason I can ping the host machine from the vm but not the vm from the host machine. I can ...
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0answers
36 views

VirtualBox guest additions did not work. What can I do?

I am setting up a Ubuntu 14.04 LTS Virtual machine on VirtualBox. I have installed the guest additions files, and restarted the VM. However despite doing so I cannot auto-resize the guest display. ...
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1answer
60 views

Installing virtualbox inside VM

I have got citrix desktop VM as my main machine to work in my office. I want to develop on linux rather than on windows. So i am trying to install virtualbox. I installed virtual box and vagrant. ...
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1answer
27 views

Can i use DOS 6.22 as guest OS in Visual Studio VMWare Live Debugging mode.?

I am using Windows 7 32 bit OS as host OS, using Visual studio 2010 for C++ code development purpose and installed DOS 6.22 under VMWare 10. now i want to use DOS 6.22 (Guest OS) for Live Debugging ...
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1answer
39 views

How do I delete a VirtualBox Snapshot

I created a snapshot of a Linux Vm prior to running updates. When i started the VM, I was immediately met with an error saying the Parent UUID does not match the snapshot. I tried deleting the ...
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11 views

Allow Vagrant Box to be accessible on the internet

I am trying to make a Vagrant box with VirtualBox to be accessible over the internet, how do I setup my Vagrantfile? I read about vagrant share and it is not what I am looking for. An example of ...
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0answers
26 views

How to separate network connections for host os and vm?

I created an Ubuntu vm with Virtualbox on my Windows7 laptop. I expected the vm to not share the network connection of the host but I was wrong. How would I reconfigure the Virtualbox vm to not ...
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1answer
32 views

Linux + Win simultaneous Use case on Laptop

I've been long accustomed to running Windows on my Laptop while been logged in to a Fedora Server in our office via Putty / XWin / SAMBA to seamless run Linux commands on data. For my next assignment ...
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42 views

Slow shutdowns of Windows 10 on VirtualBox

I'm having extremely slow shutdowns of Windows 10 under VirtualBox. Occasionally the shutdown is within "normal" parameters (as compared to Windows 10 running natively on an i5 Dell laptop), but ...
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0answers
72 views

Virtualbox not working with Windows 7

I've been trying for a while to get VirtualBox working so I can use boot2docker on my Windows box at work. In the log (called VBoxHardening.log) I frequently see [lacks WinVerifyTrust] One ...
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0answers
39 views

Can I forward a port from a VirtualBox client to the host?

(I'm really inexperienced in this area, so apologies if I'm using the wrong terminology, or am asking a simple question - I have searched a lot, but probably due to my not knowing the right words, ...
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1answer
72 views

Wrong shared folder permissions on virtualbox guest

I have a centos guest and I have enabled shared folders. The shared folder is mounted at /media/sf_vbox (witch is annoying as I named the folder vbox on the host). [duser@centos01 ~]$ ls -l /media ...
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0answers
54 views

Configuring screens in Virtualbox

I have two monitors and have a Kubuntu 15.10 guest os installed on an Ubuntu host os via Virtualbox. When I first booted into the Kubuntu machine, I could see the login screen on both monitors and the ...
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0answers
19 views

Second screen gets washed out colors if no active windows present

I have a really annoying and weird problem: I have a windows 7 Acer laptop with an extra monitor and have an Ubuntu running in virtual box on both screens fullscreen. I mostly work on the extra ...
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1answer
22 views

How to Mount Guest DOS OS with HOST OS.?

I am newbie to VM concept. actually i have installed DOS6.22 under virtualbox and using 32bit windows 7 OS as HOST Operating System, now i want to copy some folders/files from HOST OS to DOS6.22 Guest ...
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0answers
11 views

How to add my virtual machine with a backed directory tree in VirtualBox

About two months ago, I copied (or backed up) my virtual machine directory into an external hard drive. Now I'm having problems with that virtual machine and I deleted it from my computer. So, now I ...
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0answers
30 views

Creating and backing up a home server with multiple VMs?

Right now I have a cheap home server that I use for both media and storing code repos and other work projects. My idea was to basically make a HTPC that could also be used as a file/git/svn/etc. ...
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0answers
24 views

Virtual Machine add increased disk space as new partition ubuntu

I work inside a VM which runs ubuntu. As I was running out of space, I asked my System Admin to increase the space of the VM which he did and asked me to add the increased space as a new partition. ...
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75 views

Multiple monitor support in Ubuntu Virtualbox guest

I would like to use multiple monitors in i3. I'm using a Virtualbox guest OS, Ubuntu 14.04. I've installed version 5.0.14 Guest Additions for Linux. I've enabled 2 monitors from the vm settings. How ...
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1answer
14 views

Virtual Machine Preserve Environment in Moving

Suppose I have a virtual machine on a system. The memory layout of that machine will depend on its usage and how it was started up. Now, if I were to save the state of the machine, and then copy it ...
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0answers
38 views

Lubuntu fails to install in VirtualBox

I am using the latest VirtualBox version (5.0.14) in my Windows 10 machine. I am trying to install Lubuntu 15.10 64-bit in VirtualBox. "Try Lubuntu without installing" feature works fine. However, ...
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1answer
74 views

Is virtualbox a virus? [duplicate]

I know a lot of people have asked this before, but I just wanted to clarify, because when I was in my virtual desktop, and I went on a site and my antivirus on my host machine went off saying that ...