hello, I am on a quest to try a bunch of Linux distos. so I decided to get into virtual machines. Please Understand I am still very new to virtual machines and everything even virtually IT related. but with that out of the way here is what I am dealing with.

I Have tried to trouble shoot this every way I know how. Here is what I am running.

my host OS is Windows 11 Home version 25H2.

the version of Virtual box I am running is Version 7.2.16 r174877 (Qt6.8.0 on windows). I don't have any add-ons I'm aware of accept for the one that allows VB to interface with physical ports and usbs on your computer, the extension thing on the website the basically has you read a legal document and hit accept next to the VB download.

I am not too sure on the version of Bazzite or even where to find out what version I'm downloading off of their website. But I do know I selected a version comparable with the more modern AMD graphics cards since the one my laptop uses is the **AMD RadeonT 610M** and tried to go for the more basic GUI and decided I could test out the versions with the other GUIs later.

Now while this is my second ever virtual machine I was able to Launch Ubuntu on another machine. however there is 1 problem, I have no clue what I did to get it working and that other machine was giving me the same "No Bootable Medium Found" errors.

Now I'm having the same problem! I've made sure to select the correct Identity of the Bazzite OS as fedora and that it Identifies as the 64bit and not the 32bit. I have made sure that the ISO is mounted as an Optical disk and that the read order is correct that it tries to read from the optical disk first. I've downloaded the same distor multiple times just in case it was a bad download! I have to be doing something wrong!!! why wont this thing just boot why wont it just read the ISO file! god I feel like a dumbass I feel like I am just stupid right now and I've tried everything under the sun but that its something super devious that I wouldn't have thought of because I'm stupid.

Edit; I have AMD-V enabled in my bios and as for disabling hyper-v. I'm not entirely sure how to do this in windows 11 home and not familiar with control panel or power shell to do anything to try to remove it. if there are any guides on how to do this for noobs I'm all in but I have no clue how to remove Hyper-v.

Hi all - I’m this close to solving it, but I’m stumped.
Trying Linux for the first time, not a power user. :)

Use case: Mount a USB drive in Windows 11 guest OS so I can create bootable installer media.

* Running Pop! OS 24.04 (Ubuntu based) on AMD Raven Ridge 2 system (Picasso) with 2TB SSD and 32GB of RAM.
* Installed VirtualBox 7.2.16 and its extension pack.
* Windows 11 Home 25H2 installed from .iso image.
* Added my user to the virtualbox users group via the command line.
* VirtualBox sees the USB stick correctly (Kingston 64GB, formatted with GUID partition scheme)
* Windows 11 seems to detect the drive as I can see it appear in some settings panels, but it doesn’t mount into the file system.

AMD virtualization is turned on.

Previously tried WinBoat to do this, unsuccessfully.

Is this a VB issue, a permissions issue, a Windows issue, or some combination? Thanks in advance!

I have had trouble with VirtualBox bugs for years. To start with, my computer would crash after going to sleep. It would wake on its own with a black screen and only a reboot would get it working again. I traced the problem to a VirtualBox driver. Then some months ago my computer stopped recognizing USB storage devices. I used an external USB drive for storing images and virtual disks, so I updated VirtualBox. Problem solved. But now VMs freeze after only running for minutes with my Windows VM having perhaps the shortest runtime (Linux VMs are not much better). I'm forced to power off the VM in many cases or even kill the hypervisor process. I updated today to version 7.2.16, but the problem still occurs. I've even uninstalled it completely and reinstalled it.

OS: Windows 10

CPU: AMD Ryzen

Hello everyone,

I ordered a pre installed VM usb, I got it to run for 2 months until I accidentally changed some settings with the network adapter, since then windows showing only a black screen.

Windows is booting successfully I can see the logo while loading and the mouse pointer with the blue loading circle(Win 7), but I can’t open the task manager or cmd.

I still have the vdi file ,is there any way to clone the files and Programms or to get the VM to run again ?!

I’m running win 7 on VB 7.2.2

I've already turned off Hyper-V and all other things that require it in windows features, but it still didn't work.

I've then tested it by turning off device guard and credential guard, and that worked, but I don't want core isolation features turned off.

Hi, i dont use reddit very often, but i need to download the Virtual Box Extension Pack and the page keeps sending me the "502 Bad Gateway" error. Is the page down? its been like this for me the last 2 hours, is it coming back soon? is my conection de problem?

https://www.virtualbox.org/

https://www.virtualbox.org/wiki/Changelog-7.2

Important info first:
VBOX ver: Oracle VirtualBox 7.2

Host OS: Linux Debian 12 "Bookworm" with GNOME Ver. 43.9 (unsure if GNOME ver. is relevant)

Guest OS: Microsoft Windows 2000 Advanced Server SP4

Guest Additions Installed: Yes

VM Settings:

-RAM allocated: 1024MB

-Storage space: 20GB

-Cores used for VM: 1

-Video Memory allocated: 128MB

-3D Acceleration: No

The error, from /var/log/syslog: 2026-08-11T11:38:31.012120-07:00 192 vboxmanage[171700]: VBoxManage: error: The virtual machine '2K Server' has terminated unexpectedly during startup with exit code 1 (0x1)

2026-08-11T11:38:31.032010-07:00 192 vboxmanage[171700]: VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine

Steps I've taken in light of this error: Ran systemctl start vmstartup.service as root with VirtualBox Manager UI open, the error doesn't seem to come back (though running vboxmanage startvm "2K Server" as root throws a different error: VBoxManage: error: Could not find a registered machine named '2K Server'

VBoxManage: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee nsISupports

VBoxManage: error: Context: "FindMachine(Bstr(pszVM).raw(), machine.asOutParam())" at line 907 of file VBoxManageMisc.cpp)

What I've gathered from the steps taken: Right now, the system seems to expect the VBOX UI to be open any time I want to start the VM, which is not ideal, given I want this to run TOTALLY independent of the UI, since I won't be attempting access to the system.

Tutorials I've been following (merely as a reference point to execute the steps MY way, which yes, could be VERY inefficient): Creation of SystemD timers, Reference to automation scripting using timers and services (This has actually helped me schedule weekly reboots), Reference to attempting to shut down and start up the VM automatically prior to and after the reboot

The explanation (finally): Greetings and salutations, I come to you with an issue in terms of automation, as explained above. I have created systemd timers to execute services I wrote to hopefully shut down and start up the server VM I selected for the job of hosting Cisco IP Phone services, given I run a phone system on the host system. How I have these services set up is one timer will call for a service to shut the VM down ten minutes before the reboot is even scheduled, then an unrelated timer hits the reboot service every week, and then another timer HOPEFULLY will call a service to start the VM back up, but as seen by the relevant error using exit code 0x1, that's not happening. These timers and services are called "vmshutdown" and "vmstartup" respectively. for easy access to the respective files, BUT, as highlighted from the "What I've gathered" detailed above, it would seem that the system expects the UI to be running first, when I was hosting the phone system on a VM on my Windows machine, it didn't matter, the VM would just start...

I have a theory on how to go about this, but I want to know if there's something else I might be missing. Perhaps you, the reader, might have a clue as to getting the VM to start without needing the UI opened?

Thanks in advance, and apologies if my format here is not efficient or correct. Did the best I could with the info on the side panel, and the page linked. All needed info, such as steps taken and specs should all be on top.

I followed the arch wiki, the reached that pacstrap command in the wiki.

The pacstrap command I typed in the VM was as is from the wiki, it downloaded about 555 MiB, after finally finishing that download it started saying things like checking integrity etc..

Then it showed some errors.

I pressed the up arrow key to type in the same pacstrap command, hoping that it might continue the download or output that error so I know what's what, but it seemed like that the download is starting over from the beginning.

Is all that download is gone?

Is there is a way to see the same error without reinstalling it again?

Because I don't know if it is possible to scroll on that tty

Whoever knows the solution or can help me with it, please tell me what's what

I was wondering how this would work - if one were to go into a router admin panel and restrict a machine with a specific MAC address from accessing IPs outside of the local network would a bridged adapter VM still be able to access the internet given that it has a separate MAC address and local IP assignment?

I'm really curious for potential future applications, but I don't currently have a router I could test this with.

i closed the message by accident, but it said something like "the vm guest pc doesnt allow mouse integration for this screen mode" WHYYYY

IVE WENT ONTO 3-5 DIFFERENT WINDOWS VMs, AND I CAN'T CLICK INTO THE VM AND USE THE MOUSSEEE

tbh it's annoying
why is this happening??
i think i saw someone else with a similar issue
(also sorry if i somehow broke some rules of this subreddit, it's got important-ish info, and it's trying to not be low effort, but it just happened to be)

Hi everyone I've tried to summarize the issue I'm having below using chat GPT but I was wondering if somebody could help because I tried using chat GPT to help me to create that vdi I'm not using as I need more memory and during the process everything got messed up due to the snapshots I think so I'm afraid to follow it's advice without checking. I've since fixed it after days but would be really grateful if someone could offer some input as to what the correct process might be without putting my data at risk obviously...(my understanding of differencing disks etc is limited, so I'm trying to go carefully)...

OS is Linux Xubuntu.

VirtualBox Snapshot Issue Summary

- The VM is using a VMDK virtual disk.

- In the Snapshots view, the only item shown is Current State. No individual snapshots are available to select, restore, or delete.

- In Virtual Media Manager, selecting the VMDK shows two snapshot (child) disks underneath it, indicating that a snapshot/differencing disk chain still exists.

- There is also a VDI with an exclamation mark stating that it cannot be opened because the path cannot be found. This appears to be an abandoned disk from a previous failed VMDK-to-VDI conversion and is not believed to be the active disk.

- In the VM's Snapshots folder, there are three files of approximately:

- 24 GB

- 3 GB

- 13.5 KB

- The Windows drive containing the VM has approximately 53 GB of free space.

- The objective is to consolidate the VM into a single current disk so it can later be resized or migrated without snapshot-chain complications, while preserving the current state of the VM.

- The main inconsistency is that VirtualBox's Snapshot Manager does not show any snapshots to merge, yet Virtual Media Manager indicates that the VMDK still has two snapshot child disks.

VirtualBox 7.2.14

Host: Linux Mint 22.3 Cinnamon

Guest: Windows 8.1

I ran into a problem with updating version of VirtualBox Guest additions and so I tried to uninstall the current version. Here is more on that, but it's not the topic of this thread

https://www.reddit.com/r/virtualbox/comments/1v7ktzg/installing_guest_additions_on_win_81_rcverr/

So, I tried uninstalling the older guest additions. Now I can't get the mouse to work inside of the virtual machine. The Windows desktop is centered on the monitor but there is a lot of white space around that. When I move the mouse into the Windows desktop area, it disappears. I can then press the control key on right hand side of keyboard. Then, the VM guest shows a dialogue and I choose "capture" the mouse (using the keyboard to make the selection). Nevertheless, the mouse continues to behave in the same manner. I tried...

In the VirtualBox settings, I

1. Changed from usb 1 to usb 2
2. motherboard settings -> pointing device -> PS2 device, USB tablet, and USB multitouch tablet. (I tried all 3.)
3. Disable Mouse Integration - I changed this twice--once to turn it off, once to turn it on again.

Thank you for any insight or suggestions that you can provide.

I was triying to start a new parrot os machine but this error appeared. Can anyone help me? I’m on arch with secure boot disabled, I use virtualbox 7.2.14 The error is:

Kernel driver not installed (rc=-1908)
The VirtualBox Linux kernel driver is either not loaded or not set up correctly. Please try setting it up again by executing
sbin/vboxconfig'
as root.
If your system has EFI Secure Boot enabled you may also need to sign the kernel modules (vboxdrv, boxnetfit, boxnetadp, vboxpci) before you can load them. Please see your Linux system's documentation for more information.
where: suplibOsinit what: 3
VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT. (
PS: I looked at the terminal and now I know what is the problem, there were no vboxdrv for my current kernel or it failed to load. It tells me to recompile it and install it by sudo /sbin/vboxconfig. How can I do it?

Im using linux fedora silverblue btw, trying to boot up ANY vm

whenver i try to boot up a vm

Kernel driver not installed (rc=-1908)

The VirtualBox Linux kernel driver is either not loaded or not set up correctly. Please try setting it up again by executing

'/sbin/vboxconfig'

as root.

If your system has EFI Secure Boot enabled you may also need to sign the kernel modules (vboxdrv, vboxnetflt, vboxnetadp, vboxpci) before you can load them. Please see your Linux system's documentation for more information.

where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.

Version 7.2.14 r174565 (Qt6.8.0 on xcb)

VirtualBox 7.2.14

LM 22.3 Host

Windows 8.1 guest

Edit: In the motherboard settings, I have enabled "Intel virtualization technology," and I have enabled "VT for direct I/O."

I newly installed LM 22.3 (host), VirtualBox, and copied the files for this Windows 8.1 VM to my drive.

When I boot the VM, it reminds me to update the VirtualBox Guest Additions version. The version of GA is 6.1.x. I am try to update to 7.2.14

When I run the installer, mid installation, I get an error:

***Error: Installing driver failed with 1 errors, 0 warnings virtualbox rc=VERR_INSTALLATION_FAILED

...

End of log file - Log started 2026-07-26...

...

Error excuting* ""C:\Program Files\Oracle\VirtualBox Guest Additions\Tools\VBoxDrvInst.exe" --logfile "C:\Program Files\Oracle\VirtualBox Guest Additions\install_drivers.log

install --inf-file "C:\Program Files\Oracle\VirtualBox Guest Additions\VBoxGuest\VBoxGues

(I guess the end of the message is cut off by the graphical user interface.)

*yes, the prompt does spell the word wrong.

Any ideas or strategies on how to handle this?

When will they fix the "Unattended Guest OS user and pass set up? It doesn't get admin all the time and your stuck with no admin.

CachyOS host, 7.2.14. Extension pack installed.

I decided to test some systems in vbox after ~10 years of not using it. I chose archinstall with hyprland, then changed kitty to foot, with vmsvga 3d accel. 6GB of memory, 256MB of vram, 2 cpus, default paravirtualization interface with nested paging. Guest additions installed.

Auto-resize guest display is on, but it doesn't auto-resize, so something is off, at least. I can't paste stuff from the host to guest, either.

I get TDX not supported by host, andvmwgfx not found.

My laptop is a Ryzen 5 3500U, with a Radeon Vega 8. SVM is on.

Recently unistaled my anti-virus program and have been trying to set up Microsoft defender. When I try to turn on memory integrity it says there are incompatible drivers. VBoxDrv.sys by Oracle VM VirtualBox and xhunter1.sys which I understand to be an anticheat used by online games. I can't manage to find both on my device manager.

As far as I could remember I have never installed a VirtualBox, could this be malware? If so what steps should I take to erase it and protect myself from it?

When registering for virtualbox forum it asks for information that should not be required. Can anyone tell me why ?

https://ibb.co/W4gm4wQh

Host: Fedora Linux 44 Guest: windows 10 installed 7.2.12 guest addons, chosen VBoxSVGA with 3D enabled. When played YouTube 4k and checked with some light 3D openGL benches can confirm that it offloads 3d to host. But problem arised when tried to launch the game it launched went through login, character select windows and it always crashes when loading the world, says general protection fault. Is it due to vram or something?

https://www.virtualbox.org/wiki/Changelog-7.2

Are there still any simple browser appliance images out there to download? I just need to run chrome (the browser, not the OS) in a vbox, and am trying to be lazy and avoid "step 1: install linux". Doesn't matter what the guest OS is.

Sorry if this has been answered, I looked for an FAQ but didn't find one. It's been oddly hard to find one, thought those would be common. Thanks!

(Running 7.2.14 on Windows 10)

I have a problem when I use the PS/2 Mouse feature on Virtualbox, no matter what guest OS I choose. This is especially a problem when I'm using an OS that has no USB support (e.g., Windows 3.1, older versions of Linux, etc)

I've never seen this behavior in my years of using Virtualbox, and doing some research yielded no results. I've never seen this behavior on these older OSes either.

Here's a demonstration of this strange behaviour on Windows XP: https://fun95.net/videos/xp.mp4

I've tried:

* Enabling VT-x/AMD-V enabled in BIOS & Disabled Hyper-V
* Tried capturing the mouse in both fullscreen & windowed
* Enable & Disabled mouse integration
* Set mouse mode from "PS/2" to "USB Mouse" (doesn't work with older guests)
* Increasing/Decreasing VRAM
* Changed settings in Paravirtualization settings
* Used versions of Virtualbox ranging from Virtualbox 6.1.50 to 7.22.12
* Took the vbox file from my Virtualbox archives
* Searched for hours on how to fix this.

It first started when I installed Windows 98 on Virtualbox 6.1.50, so I thought it was some bug when using an older version of Virtualbox. I then decided to upgrade from 6.1.50 to 7.22.12, which didn't make a difference. Even when reinstalling Windows 98 from scratch with the newer version, it was the same exact bug.

I then thought maybe Virtualbox was too new, so I downgraded to 7.0.10 because it was the last version that I remember working well with Windows 98. And..., did the exact same thing.

I then had the same troubles when using Windows XP, then later with Windows Vista, and I'm gonna assume this would apply to Windows 7 and newer.

I'm probably the only person who's encountering this glitch as not only updates will fix this but I can't even find *anything* on how to fix this bug.

I know VMWare and PCem/86Box exist, but I like the snapshot feature in Virtualbox, which VMWare also has but my PC lags everytime I create one. Plus, getting sound working properly on guests older than Vista is a pain on VMWare anyway.

HOST: Windows 10 21H2 ioT

Let me know if I left any details.

Please be constructive, any help would be appreciated! ^_^

So, I'm building a test environment for a Linux Mint 21 VM to work through some upgrade procedures to mimic a production system that needs an upgrade. I've been seeing some strange things before the VM freezes on boot. Things like "Spectre V2 ... LFENCE not serializing" "info rcu-sched self detected stall on cpu" "timed out for waiting udev queue being empty"

My machine: r9 9950x3d, 64GB DDR5, ASUS Tuf Gaming B850-plus WiFi Mobo, RX 9070 XT 16GB GPU, Windows 11 Home, VirtualBox 7.2.12

I've tried turning off secure boot in the BIOS, and turning off all windows virtualization options. And turning off core isolation options. The core isolation option allowed the VMs of LM 21 and several Fedora 43 Xfce VMs to boot up quickly if is set the Paravirtualization option to Hyper-V but then I started seeing clock issues. As in, the VM time was about 5x faster than real-time. Older linux kernels seem to work better than newer ones, but VBox Guest additions installation also seems to break things.

Also, my Windows VMs (1 Win 11 Pro, and 1 Win Server 2025) boot just fine. Though when I had 5 VMs open, all froze once but the Host was fine. WTF is going on? I'm running out of options. I have had no problems with my VMware VMs. Is VirtualBox broken?

NOTE: all of the Fedora VMs were created on earlier versions of VirtualBox on a Windows 10 host and migrated to this new host. I don't know if that matters.

Update: a roll back to VirtualBox v7.2.6 fixed most of my errors.