29

Settings -> Display -> graphic controller set to -> VBoxVGA. Turn off Enable 3D Acceleration. This worked for me in my VM.


7

MACOS Catalina 2020 Run following command and to clear vmBox sudo kextcache --clear-staging after that reinstall virtualBox and go to your Preferences --> security & privacy -->select General you will see a allow option there you have to allow that . NOTE:- that allow option will be there only for 30 min after you installed VMBox, otherwise you ...


6

This answer assumes: VBox extension pack is installed and current. VBox guest additions are installed and current. There is a suggestion in the comments to downgrade the guest additions in order to get the shared clipboard working. Although that may work, I solved this by taking the opposite approach. Unfortunately, if you're dealing with a new version of ...


6

username: kali password: kali note: qwerty keyboard by default


5

Nobody mentioned it here yet. You may also need to change the machine-id: Works on Ubuntu: sudo rm -f /etc/machine-id sudo dbus-uuidgen --ensure=/etc/machine-id sudo rm /var/lib/dbus/machine-id sudo dbus-uuidgen --ensure reboot You can also try this parameter in the Ubuntu netplan configuration file: dhcp4: yes dhcp-identifier: mac


5

To connect from HOST to GUEST VM with NAT networking, just add a port forward. After that, you can access the forwarded port like a local port: ssh root@localhost


5

The exact same error was fixed by disabling Audio in the settings of the VM for me.


4

More weird things with Windows 10 guest (after clean install), on two different hosts. On one host with Windows 10 host, the VoxSVGA + 3D works acceptable. On the other host with Linux Manajaro (last LTS kernel 5.x) host, the VBoxSVGA (with and without 3D accel) makes the guest to not reach desktop, freezes prior to dots moving, BSOD, etc. On such other ...


4

Just want to elaborate how to do this in Windows 10 Get the Physical disk ID Open powershell Type 'Get-Disk' Look for your disk (write down the number column value) Clear readonly attributes (credits to: Korkman at https://forums.virtualbox.org/viewtopic.php?f=6&t=38914#p175089) run DISKPART (command line utility) select hard drive carefully using ...


4

I've gone through that same problem too and it was caused due to having an older version on my machine at that given time (version 6.0.22). In order to solve it, I've gone to Virtual Box's download page, downloaded the version 6.1.16 for Windows hosts and installed this newer version Then, as you can see in the next images, that error is gone


4

I looked at the VB spec's and could not find anything about Server 2019. You might consider a different virtualizing application as a test (trial version). VMware or Hyper-V. Virtual Box supports Server 2016, but Server 2019 is much newer.


4

Unfortunately, it appears that somewhere in the flux between WSL / Hyper-V and the Virtual Machine that Windows uses to protect your credentials I can no longer run VirtualBox. The issue you describe has nothing to do with WSL or Hyper-V. I read over here that you can't use VirtualBox and WSL at the same time, I'm not sure what to do about that, though I ...


4

You can first try to go to your Device Manager, expand the network adapters, right click virtualbox related network adapters and uninstall them. If it cannot solve the problem, you have to delete the VIRTUALBOX DRIVERS in C:\Windows\System32\drivers\ and Registry Editor. For more details, please refer to: https://dottech.org/101997/how-to-uninstall-...


4

So is there a way I can enable Hyper-V and still run the VMs? Yes, we'll get to that in a moment. Isn't the whole purpose of it to run VMs better? No. Hyper-V is Microsoft's hypervisor implementation. It competes with VirtualBox and VMware's hypervisors. Hyper-V only "runs VMs better" if you actually use a Hyper-V-based VM, not a VirtualBox or ...


3

In addition to Dennis M, to change Vm machine memory settings via command line, I used : vboxmanage modifyvm "Centos7_Vanila" --memory 1000 Where "Centos7_Vanila" is my VM name. To Get your imported / listed VMs run following command : vboxmanage list vms


3

Like other answers have mentioned, it is allowed by the license as long as you only use one instance. As to how to do it in practice, you need to copy the ACPI tables to the virtual machine. The relevant tables are, depending on how new your machine is, MSDM and SLIC. You can copy them as follows: ls /sys/firmware/acpi/tables/ to see what tables your ...


3

It seems the official documentation has been improved to make it clearer of which direction the communication occurs, as I discovered from this answer:


3

Following link explains how to create an installer media and install macOS in Virtuabbox on a macOS host. The guide works for macOS Catalina as well. https://samiyuru.com/blog/install-mac-on-vbox-on-mac You can use this script to create the installer media ISO that can directly be mounted on a Virtualbox VM.


3

After spending entirely too long on this particular problem I found a solution. I too was having problems getting nested virtualization working on my Windows Server 2019 VM Guest. After installing HyperV my VM would no longer boot up. In this particular situation I'm running Linux with KVM/Qemu as my L0 hypervisor, and run a Windows Server 2019 VM that I ...


3

My solution was to set the display to VBoxVGA (VirtualBox 6.1.6 r137129 Qt5.9.5, Guest additions installed, Debian 10)


3

Any VM is going to run considerably slower than your main system. The slower & smaller your system, the more difference that is going to make. With a 32-bit OS & maximum 4GB RAM, that is going to hit you even harder. Presumably you also have an old spinning rust Hard Disk, which is where your already struggling computer will have to constantly page ...


3

As soon as possible uncleanly turn off the VM and do nothing that would suppose a write to its disk (don't ever turn it on again). Then you could use something like photorec on the VM disk image.


2

When installing from an ISO that has had point fixes made to it, the kernel-devel headers will most likely be a newer version than the kernel that shipped with the ISO. You need to make sure everything is up to date and in lockstep. What worked for me on a CentOS 8 install was the following: sudo yum update sudo yum install binutils gcc make patch libgomp ...


2

on virtual box 6+ , --natpf1 is not supported , @Lyndsy Simon's answer has just one change ('--natpf1' is just changed to simply 'natpf1') , changed command looks like this VBoxManage controlvm "VM name" natpf1 "guestssh,tcp,,2222,,22" obviously i am making a change in the running VM so used controlvm if the VM is power off mode , use modifyvm instead!


2

While Babken Vardanyan's answer does indeed rename the VM and its directory, it does not rename the associated .vdi file (at least not on Windows.) If you wish to keep your machines renamed along with the .vdi files, an additional step is required, which involves renaming the Location field of the .vdi via Virtual Media Manager. So, for the sake of fully ...


2

Make sure mouse integration is enabled. If you have two mice pointers it’s not enabled. Clicking the mouse icon on settings tab fixed it for me.


2

After reinstalling virtualbox-dkms as above, you may also have to sudo modprobe vboxdrv to reload the kernel module.


2

Installing Docker Desktop 2.3.0.5 broke my VirtualBox 6.1.14 Windows guests (Windows host) Even after uninstalling Docker they were still broken Tried uninstalling Windows Subsystem for Linux Resolution was to uninstall the Windows Feature Virtual Machine Platform I arrived at the solution by checking Event Viewer => Setup to discover what changes ...


2

Thank you Hrobky, this was helpful. At an ASUS i7 with a UEFI BIOS that does not allow to disable safe boot, on a Windows 10 without encryption, it was enough these 2 steps from your solution: start->GPedit Computer Config > Admin Templates > System > Device Guard > Virtualization Based Security: Disabled admin cmd: bcdedit /set ...


2

Clipboard functionality in version 6.1.4 of GuestAdditions is bugged and won't work. Download and use the different one - for me version 6.1.2 worked fine.


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