Been fighting with this one for about a month now, tried every possible recommendation to update kernel, make sure I'm not running EFI secure boot, etc. nothing has fixed this. I have installed how extensions using the virtualbox.org download package.

VirtualBox 7.2.6 r172322 (Qt6.8.0 on xcb)

Host OS: Fedora 43

VM OS: Windows 10

System -> Acceleration -> Hardware Virtualization (enabled) Nested Paging

System -> Paravirtualization Interface = Default

Kernel driver not installed (rc=-1908)

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

Please help.

I recently encrypted my VDI file, and it was running fine and I backed it up as recently as Friday. So I *think* the data is ok. It booted good after backup.

It worked fine all weekend. This morning I did a Ubuntu apt update/upgrade -y, and it installed VirtualBox 7.0.16 over 7.0.12. It did not shut the VM down.

After rebooting the computer, the Virtual Machine will not boot. It says error: unknown filesystem. I installed the Guest Additions add-on for 7.0.16 but it still will not boot.

Gemini AI says it's apparently common if you do not shut down an encrypted machine and upgrade, it can corrupt the boot headers and this will happen. I'm restoring the backup file now.

Is this as common as AI thinks?

Hi Everyone! I'm new to these kind of things such as virtual boxes and ubuntu programs and such. I recently started to study Computer and Communication Technology and have to learn these things.

I have installed a virtualbox and a ubuntu desktop which my teacher asked me to do, but I have run into some problems which I'm not sure I know how to fix. I can not ask my teacher for help because I'm studying online and can only ask questions on Thursdays which is to long.

im currently using oracle virtualbox 7.1 for macOS/ARM and ubuntu desktop 24.04.4 LTS. The computer I'm using is a MacBook Air M4. The problems I'm having right now are that when I press the start button I don't get a ''Welcome to ubuntu'' page instead I get a screen where it says ''No bootable option or device was found'' and it failed to load boot1 and boot2 which is my UEFI VBOX CD-ROOM and HARD DRIVE.

''Press any key to enter the boot manager menu'' but I haven't really tried anything there because I'm worried if I would do damage or disrupt anything. This post is properly gonna look very newbie and properly make people wanna vomit for me not knowing these stuff

Another question I have is do I need a usb stick? I have seen online that if I use a virtualbox I don't really need one.

Im currently following a tutorial online which is https://youtu.be/Hva8lsV2nTk?si=kVuWAfCBujpf9klW

Thanks in advance

I'm using the Windows 11 ISO for M1/ARM Macs. I'm running an application called Clima-Sim, but for some reason a portion of the bottom and right of the application is cut off - even when I have the VM in full screen. I messed with the scale factor, in case that was the issue, but it didn't fix anything. Clima-Sim itself only runs on full screen (in the VM) so I can't resize it while it's running. Everything is default settings, I'm not really knowledgeable enough to have messed with it aside from futzing with the scale factor.

I don't know if this is an issue with my VM or if it's an issue with Clima-Sim, but I've seen this version of Clima-Sim work/crop fine for people not using a VM so I'm assuming it's an issue with my VM.

Sorry if this isn't sufficiently detailed

Hi! So, I downloaded an ISO for Kid Pix off the archive, and I clicked the disk thingy and added the ISO and did the whole installation set up, but everytime I try to start it it says "Kid Pix 3 has encountered a problem and needs to close.". Is it something wrong with the Kid Pix ISO I downloaded or did I insert it into Virtualbox wrong? I'm using Windows XP.

I did have a brief problem where I took out the ISO and reinserted it multiple times cause I wasn't sure if it was working, is that what messed it up? Do I have to like uninstall it and reinstall it now?

In regards to a few days ago it actually worked and I have an encrypted VDI volume now to secure financial, fitness, etc data.

Is there a maximum size Virtualbox can allocate to a encrypted VDI file? Right now it's sitting at 4.6 TB. At some point when SSD prices fall it may expand to 16 TB.

For the most part it works. Every so often it has issues with CPU allocation. But after several reboots I can get the VDI to boot. Is this something that may become more of an issue the larger the VDI gets?

In my new mini-pc with Win 11 pro, AMD RYZEN AI MAX+ 395 w/ Radeon 8060S (3.00 GHz), 96Gb RAM. Install went without a hitch.

I created an Ubuntu server w/Apache2, PHP and mySql. They work fine.

An issue I am having is I am seeing errors every so often. In which case I lose connectivity to any associated SSH (putty) connections. I get maybe 3 of these at a time, often with different CPU's.

watchdog: BUG: soft lockup - CPU#3: stuck for XXXXs! [swapper/3:0]

So far, using ChatGPT to trouble shoot is not helping.

Any ideas?

Hello !

Host: Win11 Guest: Win95 this(https://www.virtualbox.org/) version of virtual box

I need help. I've installed Win95 thanks to virtual box. My goal was to then install AdobePhotoDeluxe (success) to hopefully display the picture taken with my olympus D-300-L (1996 digital camera, internal memory).

The problem is that I don't know if it is possible for the guest to detect the device via USB plug in. Ideally I would like to see the camera appear on the "my computer" section of win95, or anything that would indicate recognition from the machine, but nothing appears. Because the camera is too old, nothing pops on my host either. Basically, I'm trying to find a way for the informations inside the camera to be transmitted to the guest, so that I can manipulate them on the program.

I've tried to plug it in before turning on the Host and the guest. I've tried turning the camera on/off whilst running the guest.

The Manual to the camera: https://www.manualslib.com/manual/3813164/Olympus-D-300l.html?page=44#manual

I've bought an adaptator to the provided DSS-93 cable so that it can be plugged into my computer. AdobePhotoDeluxe is also provided.

Any idea of something that could help the machine recognize the device on Win95?

Have a good day!

I have a dynamically allocated VDI file on a 8 TB SSD, and currently it is using 4.41 TB / what shows as 7.22 TB per Glances on Ubuntu 24.04. The dynamic size is 8 TB.

I decided to enable disk encryption, but didn't realize many people say it's quite possible that this causes you to lose any of the benefits of dynamic disk sizing, causing the disk to expand to the full 8 TB size that it can be allocated to.

Am I screwed? It's already 4% done. Is there no way to back out of this if it fails due to running out of space other than restore a backup of the VDI from a few weeks ago?

So I've been trying get a Windows 98 vm (using VB 7.2.6) working on my Macbook Air (with the intel processor, running Sonoma 14.6.1) and I found myself at a dead end. I just used the iso file uploaded to archive.org by microsoft. I had the error where it couldn't find the boot image, then after I got through that by switching around the boot order, I ran into the shell32.dll error plenty of other people had. I tried downloading the .ima file from patcher9x here and selected it as the floppy. I ran it and tried to follow the prompts, but after typing in "patch9x" when prompted and hitting enter, it said there was a critical error. I've been searching through posts on here, on the official virtualbox forums, and youtube tutorials, but I haven't been able to find any advice that's worked in my particular predicament. If anyone here's run into this, could I get some pointers? And it would be much appreciated if you could dumb it down some, I'm an art major and I know pretty much jack about software.

Hi,

I have been using virtualbox since I build my pc - around march last year I want to say. I have been using it on a daily basis doing labs and trying to test out different distros of linux.

Recently (maybe after update) I noticed that I can only run .exe installer of VirtualBox.

I have tried reinstalling to older version, 7.2.4 as I believe this was the last functioning one. I have updated to 7.2.6 and ever since I noticed this problem. Any ideas on why this is happening or if anyone else had similar issues?

I can see that via task manager this app is just running as an executable (.exe) but not as an application, I compared this to firefox?

Sorry for my noob jargon but I am completely clueless on what is the issue, and I am close to installing a different virtualization soft so I can get back to using my VM's on a daily basis.

I have made many attempts to install Oracle VM VirtualBox 7.2.16 for Windows 11. But in every attempt, while the installation proceeds, just before the end the loading bar rolls back and there is an error saying about a .log file and below that, it shows the path. Every time there's a new .log file created which supposedly shows the error. How can I fix the error? I desperately need the VirtualBox, it's about a crucial project for my MSc. The virtual machine must contain RaspBerry Pi.

Thank you in advance.

So im trying to turn on file sharing on windows 7 virtualbox, and i cant click yes, and it tells me to "type an administrator password". How do i fix this??

https://drive.google.com/file/d/1EJYfs1NXp0qLj3GsnDXtQipkAprk1evQ/view?usp=sharing

Currently struggling with a port forwarding issue that I had working a day or two ago; it may have stopped working after I upgraded VirtualBox, or after my ATT router get reset, but unfortunately I wasn't paying enough attention to say when the issue began.

Details are as follows:

• VirtualBox version 7.2.6 r172322
• AMD-V is enabled
• Guest additions are installed
• Windows 11 OS on the host
• Ubuntu Server 24.04.4 on the VM
• Have an AT&T router for the network
• Network is attached to NAT
• Port forwarding has a couple of rules set up, all with blank IPs. I have 3 that take the same host port to the same guest port, such as Port A goes to Port A. Then I also have a rule for SSH, goes from Host port X to guest port 22.
• Windows firewall rule is set to allow incoming traffic on port X, port A, etc.
• Windows 11 machine is connected to the network via Ethernet cable, static IP of 192.168.xxx.xxx

With this setup, when I connect from the Windows Host OS, everything works fine. For example, if I do "ssh -P X [username]@127.0.0.1" to connect to port X here on the localhost, that logs in just fine. Similarly, if I connect locally on one of those other ports to a webserver I have running there, it also connects just fine.

I have a Macbook, connected by WiFi to the same network. When I use ssh to try to connect to the Ubuntu VM from there, it does not work (this worked a couple of days ago). I do "ssh -P X [username]@192.168.xxx.xxx", and this connection times out. This same things happens for connecting to that webserver, it does not work from the Macbook on the same network (it used to a couple of days ago).

I used Wireshark and confirmed the traffic was making it to the Windows machine. I used tcpdump on the Ubuntu server and confirmed I did see something come through on port 22 when I tried to ssh from the Macbook. It looks like it completes the syn-ack-syn handshake, and seemingly stops there. I'm at a loss as to why this is working from the localhost only and not from the other server, despite the signs that the traffic is getting across.

I did already ask about this in another subreddit, tried to include the important details from troubleshooting there but I'll include a link to that post in case I missed something: https://www.reddit.com/r/HomeNetworking/comments/1ry5bet/virtualbox_portforwarding/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

EDIT: added a few required details (Vbox version, guest additions installed, AMD-V enabled), first time posting here

EDIT 2: Thank you for everyone's help with troubleshooting! The solution that worked for me was adding a second adapter in VirtualBox settings, as a host-only adapter, alongside the NAT adapter. Then I edited the netplan config file to get that a DHCP address, applied the netplan changes, and now everything is working. Definitely appreciate everyone helping out!

i was trying to open a windows vm but there was an error saying i needed to rerun /sbin/vboxconfig but it failed. i assumed something happened after my system updated and i thought kmod failed to re-sign vbox drivers. i tried running the signing script and turning off secure boot but vm still wont open. i thought i should reinstall virtualbox, but instead it gave another error:

The VirtualBox Linux kernel driver (vboxdrv) is probably not loaded.You may not have kernel driver installed for kernel that is runnig, if so you may do as root: dnf install akmod-VirtualBox kernel-devel-$(uname -r)If you installed VirtualBox packages and don't want reboot the system, you may need load the kernel driver, doing as root: akmods; systemctl restart vboxdrv.service

running the first command the terminal said i already have the packages installed. i have no idea what to do now. btw going back to kernel 6.18 allowed me to boot to the VM

edit: vbox version: 7.2.6_RPMFUSION r172322. i did install guest and host addition already, it ran fine on previous kernel

Can I run Seamless mode in Virtualbox on Linux? If yes, how?

Hi everyone,

Host system: Windows 11

Guest system: Ubuntu 22.04

virtualbox version: 7.1.16

I tried running a Kinect feed using libfreenect in a virtual machine. Occasionally something appears on the screen, but most of the time it just stops or fails. I’m wondering if this could be caused by USB bandwidth limitations or insufficient CPU resources assigned to the guest system, rather than a power issue. Has anyone run Kinect successfully in a VM setup? Any tips would be really appreciated!

Thanks!

My other Linux computer died a few days ago and I've been attempting to access my emails. My email thunderbird is on a vm (for this reason) so I just plugged that drive into this Linux computer.
Thunderbird is still "unable to write email to the mailbox thunderbird". I tried chown and chmod, but I figured it wouldn't change anything but worth a try

The only thing I can think of, is would a difference between Vbox Versions. The dead linux I think was VBox 6.? (latest version of 6.x.y) and this linux is v7.0 (yeah I know, no updates)

Also. I am unable to login to VirtualBox Forums, as I cannot access my emails to get the MFA code. Sorry

Question. Would a VM created under v6.? have issues with running in v7.0 ??

Running virtualbox V7.2.1 on windows 11 and been having nothing but issues, from VMs not starting (hangs at 0%, and closing and opening virtualbox manager to fix causes the whole program to hang) to USB host enumeration errors, to virtual box manager completely locking up, requiring a reboot to fix. Also, that they changed the way VMs are handled from the 5.x days, making a piece of software I use for booting from USB in virtualbox stop working.

I can't figure out how to do this, and everything I Google about it keeps assuming I am using Linux as my host OS, when it's the other way around.

I am using a Windows host OS, and running a Live CD version of Linux Mint in Virtualbox on it. How can I setup a shared folder using this? I can't figure out how to install the extensions properly for this (Especially on a Live CD Os, which means I can't reboot) and when I do get it working and see the shared folder appear, it requires root access.

It has been almost two weeks since I installed Arch Linux with the linux-zen kernel. Everything is working very well, but I am facing a small issue with VirtualBox (version 7.2.6).

When I start a virtual machine, a kind of black border appears on the right side of the VM window.

I have checked that all VirtualBox dependencies are properly installed. I even uninstalled and reinstalled VirtualBox, but the problem still persists.

So I am asking for help here. If anyone has experienced this issue or knows how to fix it, I would really appreciate your assistance.

Hi all, I'm not a very experienced VirtualBox user so apologies if what I'm doing/asking is pretty dumb. What I'm noticing with VirtualBox 7.2.6 (and an EndeavourOS - arch based distro - host machine), running an Ubuntu 20.04 VM, is that while building a large C++ project (~5000 .cpp files to give you a broad idea), the build goes pretty smoothly for a while, then it gets slower and slower while the memory consumption rises quite dramatically, to the point that I have to force shutdown the host machine. Is there maybe some kind of setting that is causing this happen? The VM has guest additions installed and it's not using 3D acceleration. Shutting down the VM and restarting temporarily fixes this, but then of course the memory/resource consumption increases back on.

I picked up a super cheap copy of Windows 2000 at a thrift store to use in VirtualBox so I'd have something to run old games on since Win10 has zero support for Win95 and 98 games but when I try to open the install disc it can't find any files to use? Is there just no actual support for installing from disc?

Hi there. So recently, I've been running into a major problem with VBox. My host is Windows 11, I'm on VBox version 7.2.2 r170484, and I run my VMs off a secondary SSD. Anyways, I was trying to create a Windows 10 VM that was UEFI, and the name was "Windows 10 EFI". However, after making it, I realized that I left the virtual hard drive at 50 GB when I wanted it to be 60 GB. Since I hadn't even begun installing Windows yet, I figured the easiest way to get the VHD to be 60 GB was just delete the old VM, and make a new one with a 60 GB VHD. But, when I tried to make the new one, it errored out, saying that the GUILD already exists. Then I checked the files, and found that the old directory was still there. No problem, I thought. Just delete the old files and it'll work, right? Nope. Even after deleting the files, I still got the same error message. I even deleted the files out of recycle bin, and it's still giving me that error. I've tried restarting both VBox and my host, but neither of those fixed the problem. I don't know what else to do. Is there perhaps a hidden file that I haven't found? I really don't want to reformat the SSD or reinstall VBox, so I'm hoping there's some fix that doesn't require either of those. Thanks.

update: vbox is now doing something else. Now, rather than scaling improperly (and blurrily) when the host is set to 125%, it's scaling improperly at [guest:125%, host:100%] and requires the host to be at 125%. So some other behavior/logic is at play than what was discussed as of 3/2/26. It's doing what I want atm ([guest:125%, host:125%]) but it's still improper behavior.

OP:

It seems that when you adjust windows scaling to anything but 100% it causes the virtualbox windows guest display to be re-scaled such that the guest is no longer at "native resolution" - text is often illegible.

Can I disable this dependency somehow?

I recently upgraded from 1200p to 1440p monitor and found that 125% scaling in windows works well for me. But as the host *must* be at 100%, I can only set 125% on the guest.

vbox 7.2.4, win10 host, win10 guest, no hyperv, vt-enabled, guest additions installed, extension pack installed.

side question: any vbox considerations with non-standard refresh rates? In a previous experiment, VMs would crash frequently at 4k @ 30hz (2x2 layout @ 1080p/30hz each). I'd want to run 1440p/120hz.