: If the Web UI upgrade fails, you must use the manual image recovery or upgrade to an intermediate version like 9.4.3 before reaching the latest build. Kerio Control 9.4.2 Release Notes - GFI
Corrected "low free disk" alerts that triggered incorrectly when data encryption was enabled.
Automatically drops connections originating from known malicious IP addresses, scanners, or botnet command-and-control servers.
Better CPU utilization means faster network speeds during heavy traffic inspection.