This guide applies to Kerio Control 9.4.2 on-premise deployments. Always test changes in a lab environment first.

The "good story" behind Kerio Control 9.4.2 (released October 11, 2022) is one of crucial security maintenance and the quiet resolution of long-standing infrastructure hurdles. support.keriocontrol.gfi.com

Deploy in VMware or Hyper-V environments. A Hardware Appliance: Purpose-built "plug-and-play" boxes. Improvements in 9.4.2 Specific updates in the 9.4.x branch generally focus on:

: You can activate the Kerio Control Web Filter by navigating to Content Filter > Applications and Web Categories in the administration panel. Essential Documentation

: A major component of this version was the transition to a newer Linux kernel, providing better hardware compatibility and underlying system performance.

: A common issue where VMware virtual adapters may disappear or fail to load after the upgrade to 9.4.2.