An upgrade is available from Kerio Connect 9.4.2 to
Kerio Connect 10.0.3

Documentation Knowledge Base System Requirements

Important notes before upgrading

We recommend to take a full backup of Kerio Connect. For more information refer to Configuring backup in Kerio Connect.
Check that the Software Maintenance is valid for the upgrade. Your Software Maintenance expiration date can be found on the splash screen of your Kerio Connect Administration console. You are entitled to upgrade to the latest version that gets released during your Software Maintenance period, even post its expiration.
If you are manually upgrading to Kerio Connect 9.2.7 and above on Linux then you must first install the cryptsetup package before the upgrade. If you are performing the upgrade using the administration the cryptsetup package is installed automatically.
Check that the server meets the latest system and hardware requirements. For more information refer to Kerio Connect Multi-Server System requirements and Prerequisites.
Kerio Connect requires restart during upgrade. Perform the upgrade when there is no traffic on the server or when it is least impacting on the business operation.

Upgrade Procedure

Kerio Connect supports both auto and manual upgrading, If you're using Kerio Connect 9 and above, you can automatically upgrade your version from the Configuration > Advanced Options > Software Updates tab on the Administration interface.

To manually upgrade:

Click Download Upgrade above to download the latest build on the server where Kerio Connect is currently installed.
Visit the Kerio download page to download the latest version: http://www.kerio.com/connect/download.
Depending on the platform that runs Kerio Connect, follow the instructions below:

Microsoft Windows

a. To upgrade Kerio Connect on Microsoft Windows, download and run the installation package.

b. The program detects the installation directory, stops all running components (Kerio Connect engine and Kerio Connect Monitor) and replaces existing files with new ones automatically.

Mac OS X

a. To upgrade Kerio Connect on Mac OS X, download and run the installation package.

b. The program detects the installation directory, stops running components (Kerio Connect engine and Kerio Connect Monitor) and replaces existing files with new ones automatically.

Linux — RPM

To upgrade Kerio Connect on Linux RPM, use this command: # rpm -U <installation_file_name>

Linux — DEB

To upgrade Kerio Connect on Linux Debian, use this command: # dpkg -i <installation_file_name.deb>

Kerio Connect VMware Virtual AppliancePre-configured Kerio Connect virtual machine image for VMware.

For more information refer to Virtual Appliance and Linux.