Overview

When it is not possible to access or administer Kerio Control hardware appliance through Webadmin, the box can be reset to the factory default configuration. This can be done using the Factory-reset tool connected via USB.

Recovering to factory settings includes removal of all configuration data including activation and the statistics database.

The USB tool is designed for a single-use. An operation does not repeat if you restart with the flash drive still in the USB port.

Note: All data on the flash drive is completely overwritten.

Prerequisites

Download the Factory reset USB script

You need to have at least a 256 MB USB flash drive.

You must perform these steps using a USB 2.0 port.

Solution

Prepare USB drive

Windows

1. Insert the flash drive into a USB port on your computer.
2. Open Command Prompt and type diskpart to launch Disk Partition utility. Click Yes to confirm that you have administration rights.
3. Type list disk to display the list of drives and look up the number of the physical USB drive.
4. Type select disk X (replace X with the number of the corresponding disk, for example, select disk 1).
5. Type clean to remove all partitions.
6. Select the disk again: select disk X
7. Create a new disk partition by executing the following commands:
   create partition primary
select partition 1
format fs=fat32 label="USB Flash" quick
   
   
8. Type exit to close the Diskpart utility.
9. Move the kerio-control-factory-reset-9.3.6-5808-p1.bin file into USB Flash.
10. Eject the USB safely and unplug it from the USB port.

Linux

1. Insert the flash drive into a USB port on your computer.
2. Open the terminal console in the super-user mode (using the suor sudo -s command depending on your Linux distribution).
3. Use the command fdisk -l to detect the USB flash drive name (for example, /dev/sda).
4. Save the kerio-control-factory-reset-9.3.6-5808-p1.bin file to the flash drive using the following command:
   dd if=/home/<username>/Downloads/kerio-control-factory-reset-9.3.6-5808-p1.bin of=/dev/sda bs=1M
   
   and replace /dev/sda with your actual device name.
5. Use the sync command to ensure all disk operations finish.
6. Eject the USB drive safely (eject /dev/sda command) and remove it from the USB port.

macOS 10

1. Insert the flash drive into a USB port on your computer.
2. (Optional) If the flash drive is NOT empty, erase the content using Disk Utility.
   
   
   
   
3. Open the terminal: Applications > Utilities > Terminal
4. Use sudo diskutil list command to detect the USB flash drive name (for example, /dev/disk2).
5. Use sudo diskutil unmountDisk /dev/diskX command to unmount the flash drive.
6. Save the kerio-control-factory-reset-9.3.6-5808-p1.bin file to the USB flash drive using the following command:
   sudo dd if=/Users/<username>/Downloads/kerio-control-factory-reset-9.3.6-5808-p1.bin of=/dev/diskX bs=1m
   
   and replace /dev/diskX with the actual device name.
7. Eject the flash drive securely and remove it from your computer.
   

Restore the defaults

Note: example procedure is performed on the NG110 box.

1. Switch off the Kerio Control box.
   
   Make sure, the power button is red.
   
   

   Important: the RESET pinhole will restart your Kerio Control. Pressing the reset button requires a needle or spile.

2. Plug the USB flash drive into a USB 2.0 port (not 3.0) of your Kerio Control box.
   
   

   Important: the flash drive must be plugged into a USB 2.0 port. Using a USB 3.0 port may not work.

3. Turn on the box by pressing the power button. The light should be turning green.
4. Kerio Control restarts automatically.
5. Once your PC is connected via LAN cable to the box, you will see a "License warning" message.
   
6. Follow the installing Kerio Control box guide to register the box.
   

Testing

After completing all the steps inside the Activation Wizard, the Kerio Control Webadmin is shown.