Virtualbox 7.0 / Ubuntu Server 24.04/Ubuntu Server 22.04

Michael Cooper — Fri, 07 Feb 2025 08:31:37 -0000

I used the following instructions to install phpVirtualbox

I am getting this error when I go to the site (Please see attachment):

VirtualBox 6.1.38

Brett Girman — Fri, 07 Oct 2022 18:28:32 -0000

Howdy! I've tried everything to get this up to date, including attempting the docker container, as well as downloading trasherdk/phpvirtualbox 6.1 source code. After setting up in a directory and setting up an Apache config for that directory, upon login I get:

"This version of phpVirtualBox (6.0-1) is incompatible with VirtualBox 6.1.38_Ubuntu. You probably need to download the latest phpVirtualBox 6.1-x.

See the Versioning section below the file list in the link for more information"

I believe that is what I've done, but I still have this issue, if anyone can point me in the right direct, I'd appreciate it very much. Thanks!

Can't stop VRDE: The machine 'OL7-41' is already locked for a session (or being unlocked)

Eduardo B — Thu, 28 Jul 2022 00:31:31 -0000

For those who came here looking for a solution to the same problem.
As per my previous thoughts, the problem was really regarding to modifyvm command. To modify VM config, it has to be stopped.
However, it is possible to change session config keeping VM config unchanged. The key is to use controlvm like bellow:

VBoxManage controlvm "w10" vrde off
Adm privilege isn't necessary.

The official docs explain everything in details. Big shame on me for not reading it before!
https://docs.oracle.com/en/virtualization/virtualbox/6.0/user/vboxmanage-controlvm.html

Can't stop VRDE: The machine 'OL7-41' is already locked for a session (or being unlocked)

Eduardo B — Thu, 28 Jul 2022 00:17:09 -0000

Hi,
I am going thru the same problem you posted. I need to activate/deactivate vrde feature on running VMs, but when I run "VBOXManage modifyvm VM --vrde off" I get a session lock error (VBOX_E_INVALID_OBJECT_STATE).
I also tried to start VM with VBoxHeadless --vrde config changing vrde config with above command, but I got the same result.
I'm curious how PHPVirtualBox and VirtualBox Host GUI manage to switch vrde feature on/off for running VMs.
As a desperate trial, I tried to pause VM to disable vrde feature with the same command (VBOXManage modifyvm --vrde off), but didnt also worked, even with administrator privileges.
It seems to me the problem regards to the command VBoxManage isn't having write privileges to change a session state that is not stopped.

Any clues are very welcome.

Host - DEV: Windows 10
Host - PROD: Ubuntu 20.04
VirtualBox version: 6.1.34 r150636 (Qt5.6.2)
Guest VM: Windows 10

Thanks you
Eduardo

Whole error output:

VBoxManage.exe: error: The machine 'w10' is already locked for a session (or being unlocked)
VBoxManage.exe: error: Details: code VBOX_E_INVALID_OBJECT_STATE (0x80bb0007), component MachineWrap, interface IMachine, callee IUnknown
VBoxManage.exe: error: Context: "LockMachine(a->session, LockType_Write)" at line 554 of file VBoxManageModifyVM.cpp

(no subject)

Smart Guide — Wed, 18 May 2022 06:18:22 -0000

Hi,

Please note that this site is not monitored by phpvirtualbox developers. Please report all issues to Github here: https://github.com/phpvirtualbox/phpvirtualbox/issues

(no subject)

Justin Parks — Wed, 18 May 2022 03:49:18 -0000

An unknown PHP error occurred. This is most likely a syntax error in config.php in phpVirtualBox's folder. The most common errors are an unclosed quote or a missing semicolon in a configuration item that has been entered (e.g. location, username, or password).

Depending on your PHP configuration, navigating directly to config.php in your web browser may display the PHP error message.

If find that this is not the case, or have no idea what this error message means, please raise the issue at http://sourceforge.net/p/phpvirtualbox/discussion/help/

Host OS - Windows 10
php - 8.1.6
virtualbox -6.1
apache - 2.4

My config file:

<?php
/
* phpVirtualBox example configuration.
* @version $Id: config.php-example 585 2015-04-04 11:39:31Z imoore76 $
* * rename to config.php and edit as needed.
* /
class phpVBoxConfig
{
/ Username / Password for system user that runs VirtualBox */
var $username = "admin";
var $password = "1T|gg3r2";

/* SOAP URL of vboxwebsrv (not phpVirtualBox's URL) */
var $location = "http://127.0.0.1:18083/";

/* Default language. See languages folder for more language options.
 * Can also be changed in File -> Preferences -> Language in
 * phpVirtualBox.
 */
var $language = "en";

/* Set the standard VRDE Port Number / Range, e.g. 1010-1020 or 1027 */
var $vrdeports = "9000-9100";

/*
 *
 * Not-so-common options / tweaking
 *
 */

// Multiple servers example config. Uncomment (remove /* and */) to use.
// Add ALL the servers you want to use. Even if you have the server set
// above. The default server will be the first one in the list.
/*

var $servers = array(
array(
'name' => 'London',
'username' => 'user',
'password' => 'pass',
'location' => 'http://192.168.1.1:18083/',
'authMaster' => true // Use this server for authentication
),
array(
'name' => 'New York',
'username' => 'user2',
'password' => 'pass2',
'location' => 'http://192.168.1.2:18083/'
),
);
*/

// Disable authentication
#var $noAuth = true;

// Host / ip to use for console connections
#var $consoleHost = '192.168.1.40';

// Disable "preview" box
#var $noPreview = true;

// Default preview box update interval in seconds
#var $previewUpdateInterval = 30;

// Preview box pixel width
#var $previewWidth = 180;

// Max number of progress operations to keep in list
var $maxProgressList = 5;

// Change default preview aspect ratio to 1.
// http://www.wikipedia.org/wiki/Aspect_ratio_%28image%29#Previous_and_presently_used_aspect_ratios
#var $previewAspectRatio = 1.6;

// Enable custom VM icons
#var $enableCustomIcons = true;

/*

Exclusively use phpVirtualBox's groups configuration rather than VirtualBox groups.
This has the following effects:

) Group changes made in phpVirtualBox will not be reflected in VirtualBox programs such as
VirtualBox and VBoxManage
) Group changes will not affect which folder a VM is placed in
) You can rename groups that contain running VMs and move / copy running VMs to groups
/
#var $phpVboxGroups = true;

/*

Allow to prompt deletion hard disk files on removal from Virtual Media Manager.
If this is not set, files are always kept. If this is set, you will be PROMPTED
to decide whether or not you would like to delete the hard disk file(s) when you
remove a hard disk from virtual media manager. You may still choose not to delete
the file when prompted.
*/
var $deleteOnRemove = true;

/*
 * File / Folder browser settings
 */

// Restrict file types
var $browserRestrictFiles = [
    ".iso",
    ".vdi",
    ".vmdk",
    ".img",
    ".bin",
    ".vhd",
    ".hdd",
    ".ovf",
    ".ova",
    ".xml",
    ".vbox",
    ".cdr",
    ".dmg",
    ".ima",
    ".dsk",
    ".vfd",
];

// Restrict locations / folders
#var $browserRestrictFolders = array('D:\\','C:\\Users\\Ian'); // Or something like array('/home/vbox','/var/ISOs')

// Force use of local, web server based file browser instead of going through vboxwebsrv
#var $browserLocal = true;

// Disable file / folder browser.
#var $browserDisable = true;

// Disable Windows drive detection
#var $noWindowsDriveList = true;

// Just list all drives from C:\ - Z:\ without checking if they exist or not.
// This may be required on older Windows systems with more than one drive.
#var $forceWindowsAllDriveList = true;

/*
 * Misc
 */

/*
 * Auto-refresh interval in seconds for VirtualBox host memory usage information.
 * Any value below 3 will be ignored.
 */
var $hostMemInfoRefreshInterval = 5;

/* Show % of free host memory instead of % used */
#var $hostMemInfoShowFreePct = true;

/*
 * VM Memory warnings.
 *
 * If $vmMemoryStartLimitWarn is enabled, each time a VM is started through
 * phpVirtualBox, it will check that the available host memory is greater than
 * the base and video memory of the VM + 50MB (a little bit of overhead). If it
 * is not, a confirmation dialog will be presented to confirm that you want to
 * start the VM.
 *
 * If $vmMemoryOffset is set (and $vmMemoryStartLimitWarn), $vmMemoryOffset
 * megabytes is subtracted from the available host memory before the check is
 * performed by $vmMemoryStartLimitWarn logic. For instance it may be a good
 * idea to always have VM memory requirements + 100MB free. 100 is the default.
 */
#var $vmMemoryStartLimitWarn = true;
#var $vmMemoryOffset = 100;

/*
 * Display guest additions version of a running VM on its Details tab
 */
#var $enableGuestAdditionsVersionDisplay = true;

/* Disable any of phpVirtualBox's main tabs */
#var $disableTabVMSnapshots = true; // Snapshots tab
#var $disableTabVMConsole = true; // Console tab

/* Screen resolutions for console tab */
var $consoleResolutions = [
    "640x480",
    "800x600",
    "1024x768",
    "1280x720",
    "1440x900",
];

/* Console tab keyboard layout. Currently Oracle's RDP client only supports EN and DE. */
var $consoleKeyboardLayout = "EN";

/* Max number of network cards per VM. Do not set above VirtualBox's limit (typically 8) or below 1 */
var $nicMax = 4;

/* Enable advanced configuration items (normally hidden in the VirtualBox GUI)
 * Note that some of these items may not be translated to languages other than English.
 */
#var $enableAdvancedConfig = true;

/* Enable startup / shutdown configuration.
 * This only works in linux and you must add the vboxinit file to
 * your startup scripts list.
 */
#var $startStopConfig = true;

// Authentication library.
// var $authLib = 'Builtin';

// VM ownership
#var $enforceVMOwnership = true;

// Per-user VM quota
#var $vmQuotaPerUser = 2;

// Allow VDE network configuration. This must be supported by the underlying VirtualBox installation!
// If you do not know what VDE networking is - you do not need it, it is probably not supported by your
// VirtualBox installation and will cause errors if enabled.
#var $enableVDE = true;

// Disable setting SATA controllers port count to the max port number found when saving VMs.
#var $disableSataPortCount = true;

/* Enable Parallel Port configuration - EXPERIMENTAL

LPT support may or may not work for you.
!!! VirtualBox LPT support only works in Linux. !!!
*/
#var $enableLPTConfig = true;

/* Enable HardDisk IgnoreFlush configuration. This controls the "ExtraData" setting
 * in "VBoxInternal/Devices/[controller type]/0/LUN#[x]/Config/IgnoreFlush". See
 * Responding to guest IDE/SATA flush requests at:
 * http://www.virtualbox.org/manual/ch12.html#idp12757424
 */
#var $enableHDFlushConfig = true;

/*
 * Event listener timeout in seconds. This is an advanced option that most people will
 * probably not need to change.
 */
#var $eventListenerTimeout = 20;

/* END SETTINGS  */

}

setting for autostart VMs

Nurettin Alp — Fri, 12 Nov 2021 11:06:41 -0000

https://askubuntu.com/questions/1131056/virtualbox-web-service-missing-after-clean-installation-on-ubuntu-18-04-1-lts

Note: Tested with VirtualBox 6.0 and it's working.

These services are not installed by default on the Ubuntu version you are using. However, you can download the official scripts that provide these services.

To do so, simply copy and paste these commands into the terminal and hit the enter. This will download the scripts and add them via update-rc.d to the start up scripts.

cd /etc/init.d/
services=(vboxautostart-service vboxweb-service vboxballoonctrl-service)
base_url="https://www.virtualbox.org/svn/vbox/trunk/src/VBox/Installer/linux"
for service in "${services[@]}"
do
wget "${base_url}/${service}".sh -O "${service}" \
&& chmod +x "$service" \
&& update-rc.d "$service" defaults 90 10
done
About the vboxdrv:
It's not a service, but a module and needs to be loaded. You can run modprobe vboxdrv to load the module, but usually it's automatically loaded during the virtualbox installation.

To check if it's really loaded you can run

modprobe -n --first-time vboxdrv

Or you can use modinfo to verify if the vboxdrv kernel module is loaded:

modinfo vboxdrv

filename: /lib/modules/4.15.0-47-generic/misc/vboxdrv.ko
version: 6.0.4 r128413 (0x00290008)
...
After you are done with all these things, simply reboot.

After the restart, you can run service --status-all | grep vbox to verify that the services are running.

You should see an output similar to this:

[ ? ] vboxautostart-service
[ + ] vboxballoonctrl-service
[ + ] vboxweb-service
Now, you can also control these services via systemctl, i.e. systemctl status vboxautostart-service.

For more information about the configuration options of each Oracle VM VirtualBox service, see the official manual:

Web Service: page 243 (254/361)

Autostart Service: page 248 (259/361)

Undefined array key "context" on Windows

Gabriele Massa — Wed, 08 Sep 2021 19:47:00 -0000

Hi all,
I've just installed virtualbox 5.2 and phpvirtualbox on my Windows 10 host PC.
I tried following tutorials online, but every time i turn on Apache and the websrv.exe and go to localhost/phpvirtualbox, i'm getting this error:

An unknown PHP error occurred. This is most likely a syntax error in config.php in phpVirtualBox's folder. The most common errors are an unclosed quote or a missing semicolon in a configuration item that has been entered (e.g. location, username, or password).

by looking PHP error logs i'm getting this:

PHP Warning:  Undefined array key "context" in C:\xamppserver\htdocs\phpvirtualbox\endpoints\lib\language.php on line 77

Does anybody know what i'm doing wrong? it would be cool to have VMs running in headless mode on my main rig and be able to manage them via web.

I'm attaching my config.php even though i kept it pretty stock.

Can't assign more than 1 CPU

rpyne — Sat, 21 Nov 2020 06:27:29 -0000

I'm running VirtualBox 6.1.4 on CentOS8 (both host and guest) and phpVirtualbox 6.0 on a box with 128GB RAM and 24 CPU cores. The only things running are the host and on VM. I'm trying to assign 4 CPUs to the VM, and phpVB won't save configuration with more than one.

Any suggestions will be greatly appreciated.

Unable to connect to VM via RDP

Brian J Hoskins — Sun, 25 Oct 2020 17:14:50 -0000

Hello all.

I have recently set up virtualbox on my dedicated server which runs Ubuntu Server 18.04. I have also set up phpvirtualbox and with it I can view, create and manage my VMs.

Unfortunately, despite my best efforts, I have been unable to connect to a VM using RDP. When I attempt to do so I receive the following unhelpful message which suggests my client can't see the server:

Make sure that the remote computer is turned on and connected to the network and that remote access is enabled.

Additionally, if I try to use the console within phpvirtualbox, I get the following complaint:

Disconnect reason: E: TCP: SECURITY_ERROR Error #2048

I have googled this complaint and found many people in a similar situation. However, I have not found anything that helps me move forward.

I did wonder if port 9000 (which is the port that my VM is se to use for the display) needs to be allowed at my server end. I have set the firewall to allow this port but unfortunatley this has not resulted in a working setup either.

My phpvirtualbox config is pasted below.

Can an experienced phpvirtualbox user with server admin experience help me out my providing some diagnosis tips? This would be much appreciated.

<?php
/**
 * phpVirtualBox example configuration.
 * @version $Id: config.php-example 585 2015-04-04 11:39:31Z imoore76 $
 *
 * rename to config.php and edit as needed.
 *
 */
class phpVBoxConfig {

/* Username / Password for system user that runs VirtualBox */
var $username = '*****';
var $password = '*****';

/* SOAP URL of vboxwebsrv (not phpVirtualBox's URL) */
var $location = 'http://127.0.0.1:18083/';

/* Default language. See languages folder for more language options.
 * Can also be changed in File -> Preferences -> Language in
 * phpVirtualBox.
 */
var $language = 'en';

/* Set the standard VRDE Port Number / Range, e.g. 1010-1020 or 1027 */
var $vrdeports = '9000-9100';
/* Set the default VRDE address, e.g. 192.168.1.1 */
#var $vrdeaddress = '192.168.0.40';
#var $vrdeaddress = '0.0.0.0';

/*
 *
 * Not-so-common options / tweaking
 *
 */

// Multiple servers example config. Uncomment (remove /* and */) to use.
// Add ALL the servers you want to use. Even if you have the server set
// above. The default server will be the first one in the list.
/*
var $servers = array(
        array(
                'name' => 'London',
                'username' => 'user',
                'password' => 'pass',
                'location' => 'http://192.168.1.1:18083/',
                'authMaster' => true // Use this server for authentication
        ),
        array(
                'name' => 'New York',
                'username' => 'user2',
                'password' => 'pass2',
                'location' => 'http://192.168.1.2:18083/'
        ),
);
*/

// Disable authentication
#var $noAuth = true;

// Host / ip to use for console connections
var $consoleHost = '192.168.0.40';

// Disable "preview" box
#var $noPreview = true;

// Default preview box update interval in seconds
#var $previewUpdateInterval = 30;

// Preview box pixel width
#var $previewWidth = 180;

// Max number of progress operations to keep in list
var $maxProgressList = 5;

// Change default preview aspect ratio to 1.
// http://www.wikipedia.org/wiki/Aspect_ratio_%28image%29#Previous_and_presently_used_aspect_ratios
#var $previewAspectRatio = 1.6;

// Enable custom VM icons
#var $enableCustomIcons = true;

Recent posts to Forums

Virtualbox 7.0 / Ubuntu Server 24.04/Ubuntu Server 22.04

VirtualBox 6.1.38

Can't stop VRDE: The machine 'OL7-41' is already locked for a session (or being unlocked)

Can't stop VRDE: The machine 'OL7-41' is already locked for a session (or being unlocked)

(no subject)

(no subject)

setting for autostart VMs

modprobe -n --first-time vboxdrv

modinfo vboxdrv

Undefined array key "context" on Windows

Can't assign more than 1 CPU

Unable to connect to VM via RDP