Last change on 2020-07-31 • Created on 2020-03-20


Hetzner offers a remote console which can be attached to any dedicated server. This remote console provides KVM (keyboard, video and mouse) over-IP capabilities and allows full BIOS level control of the server. It is useful for troubleshooting a server, especially in cases where SSH can't be used. The boot menu can be accessed and network configuration errors can be fixed. The console has virtual media support, so it can be used to install a custom Operating System by mounting an ISO file.

The remote consoles are called KVM Console. This term comes from the name of the original remote consoles that were offered. While they have since been upgraded by more modern solutions, the name has been kept.

A KVM Console is free for 3 hours. If it is required for a longer period of time it can be booked for € 8.40 per additional 3 hours.

Please note that Java is required when using the KVM console feature.

Ordering a KVM Console

Since the number of KVM Consoles in each DC is limited, we recommend clients order the KVM Console in advance via the Robot.

If you would like a KVM Console then please request one directly via the Robot webinterface. To do so, login to the Robot, go to Servers, select your server and click tab Support. You will see support form. Here please select Remote Console (KVM). You can then select an appointment for when you want it, and for how long you want it.

Logging in

Once our technicians have connected a KVM Console to your server they will send you an email with the login details, as well as the URL of the KVM Console. This URL can simply be clicked on, or you can copy and paste it into your browser. You will then see the following screen:

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Once you have logged in with the login details mentioned in the email you will see the following screen:

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Using the KVM Console

Under KVM Console Preview (see screenshot above) you can click on the screen itself to open the console, or on the Click to open KVM Console link at the bottom.

A dialog box will pop-up asking what you want to do with the file spider.jnlp. This needs to be opened with the JAVA(TM) Web Start Launcher, which should automatically be selected.

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Please note:

  • Lantronix support states that the KVM Console will not work fully with Java 9 or 10. To maintain functionality, stay with Java 8. Source
  • If Java 8 is not yet installed on your computer, please visit the Java website and download and then install the latest version.
  • A security warning might pop-up. This is a general warning from Java and doesn't mean there are any security problems with the Java applet. The warning can be safely accepted.
  • Unfortunately, some browsers cancel the download of the applet with an error message (file incomplete / invalid certificate). Please use an alternative browser in such cases. With a current standard version of Mozilla Firefox, no such problems are known so far for example.

Once the Java applet has initialized the console should open and you will see the screen output of the server, as though you were sitting right in front of the server itself.

Keyboard Layout

If the keys you are pressing on your own keyboard are not being accurately shown on the screen/console then the keyboard layout is most likely incorrectly set. This can be changed under the menu item Options by going to Local Keyboard. There you need to select the correct keyboard layout of the keyboard you are using.


Via the confirm Ctrl+Alt+Delete button at the top left of the console the server can be send a ctrl+alt+delete. This can be used to restart the server, or to login to Windows. Once you have clicked on that button you will need to confirm that you want to send a ctrl+alt+delete to the server.

Full Screen Mode

You can choose to have the console fill your screen if you want. Simply Press Ctrl+F10, or one of the buttons at the top of the console with an A or S and arrows pointing outwards. Leaving full screen mode is done by pressing Ctrl+F10 again.

Installing an OS

The KVM Console can be used to install a custom OS. This can be done either by mounting an ISO file or having our technicians burn the ISO file onto a USB stick/DVD.

Please note that if you want to install one of the standard Linux Operating Systems we offer then this can be done automatically via Robot, under the Linux tab of the server, or manually via our installimage or VNC installation.

Mounting an ISO File

To access the virtual media interface please click on the Interfaces tab and then go to the Virtual Media link. Here you can enter the details of the location of the ISO file.

Please note:

  • The KVM Console only supports the mounting of ISO files via the SAMBA (SMB)/CIFS networking protocol.
  • Mounting a file can take a significant amount of time, so please make sure the connection to the location of the file is good. Unfortunately, there is no progress bar. You will see a notification once the file has been fully loaded.
  • We cannot guarantee that mounting an ISO file and installing it will always work. For that reason, we offer the option of having our technicians burn the ISO file onto a USB stick/DVD.

Using our Mirror

To help our clients install Windows we provide a number of images of those Operating Systems.

The images we offer can be found on two of our mirrors:

  • http://download.hetzner.de/ is accessible from anywhere, and requires a username and password to login. These details can be found at the end of the server activation email, the email in which the login details for the server itself are also found.
  • http://mirror.hetzner.de/ is only accessible from the Hetzner network, and does not require a password.

The following examples use the internal mirror, though a link to the external mirror is also mentioned. This link can be used to check the exact file names of the Operating System images.


The Windows images we have can be found under http://download.hetzner.de/bootimages/windows/.

These Windows images are straight from Microsoft and don't include any changes from us. They do not come with a license, and can thus be used to install a clean Windows on the server, which can then be activated with your own license key.

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  • The Image File with Path name can be copied directly from our mirror.
  • The User Name and Password fields can be left blank as they are not needed.

Using the Backup Space

Our backup space is reachable via SAMBA/CIFs, meaning it can be used to host an image which can then be mounted via a KVM Console.

See also: SAMBA/CIFS on our Backup space.

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  • <username> is the username of your backup space, which can be found under the "Backup" tab of the server in Robot.
  • <file_name> is the file name of the ISO file.
  • If you have placed the ISO file in a sub-folder then please specify that before the file name. For example: <sub_folder>/<file_name>.
  • The password is the one you have set for the backup space.

Using your own host

The ISO file doesn't have to be hosted by us. You can host the ISO file wherever you want, as long as it is reachable via SAMBA/CIFS. This could be from another server at Hetzner, a third-party server or even from your own computer/server at your office/home.

Please note that doing so can take a long time, so please be patient as the image is mounted/uploaded.

Using a USB stick/DVD

If the options mentioned above for mounting an ISO file don't work or take too long, then there is always the possibility of having our technicians "burn" the image onto a USB stick or DVD and attaching that to the server along with the KVM Console.

Please send our technicians a link to the ISO file you have. This can be done when ordering the KVM Console directly, or afterwards by replying to the KVM Console request ticket.

Please note that in this case the ISO file does not necessarily have to be reachable via SAMBA/CIFS, it can simply be reachable via ftp for example, since our technicians will be connecting to it directly, and not via the KVM Console.

Booting the Server

Once the ISO file has been mounted/attached to the KVM Console, you will need to restart the server and boot from it. This can be done via the KVM Console function of the KVM Console.

When booting the server, please enter the boot menu. On most motherboards this can be done by pressing F11 during boot. Please note that some motherboards require a different function key, like F6, to enter the boot menu, so please keep an eye out for the appropriate prompt.

Once in the boot menu select PepperC Virtual Disc 1 0.01 if you have mounted the file using the KVM Console. Alternatively, if our technicians have connected a USB stick or DVD then select the appropriate option to boot from that. JetFlashTrascend 16GB 1.00would be an example for a USB stick, while HL-DT-STDVDRAM GP50NB40 1.00 would be an example for a DVD.

Installing the OS

Now you can simply follow the on-screen instructions to install the OS you have mounted/attached to the KVM Console.

Loading the installation files for Windows takes around a minute when done via USB/DVD but can take 10-15 minutes via a mounted ISO file (via our mirror). If the ISO file has been mounted from somewhere else then it can take even longer.

Prices plus VAT, if applicable.