Before downloading, ensure your endpoint meets these minimum specs:
| Component | Requirement | | :--- | :--- | | Operating System | Windows 10 (1809+), Windows 11, Windows Server 2019/2022 | | Architecture | x64 (64-bit) only (32-bit support dropped in build 942) | | RAM | 512 MB (minimum), 2 GB (recommended for concurrent software) | | Disk Space | 150 MB for installation + logs | | Network | UDP 500, UDP 4500 (NAT-T) outbound to Kerio Control firewall | | Admin Rights | Required for driver installation (Kerio Virtual Adapter) | kerio control vpn client 942
Note: macOS users, be aware that the "Kerio Control VPN Client 942" is Windows-specific. Mac users must use the native macOS IPSec client or the older Kerio Connect VPN client (different product family). Before downloading, ensure your endpoint meets these minimum
Unlike a simple "connection refused" error, 942 usually appears after the client has successfully resolved the server’s hostname and passed the initial firewall rules. It fails during the SSL/TLS handshake or the virtual adapter setup phase. It fails during the SSL/TLS handshake or the
While "942" is the major build, check for hotfixes. GFI released 942.1 and 942.2 to address a memory leak in the kerio_vpn_service.exe. Install these via the Windows Update catalog.