System Requirements

Operating Systems

Note: Downloading ISL Light Desk or running ISL Light Desk Network Start executable will download latest supported version for your operating system.

Microsoft Windows

• Microsoft Windows 11
• Microsoft Windows Server 2025
• Microsoft Windows Server 2022
• Microsoft Windows Server 2019
• Microsoft Windows Server 2016
• Microsoft Windows 10 (32-bit and 64-bit)
• Microsoft Windows 8.1 (32-bit and 64-bit)
• Microsoft Windows Server 2012 R2
• Microsoft Windows 8 (32-bit and 64-bit)
• Microsoft Windows Server 2012
• Microsoft Windows 7 (32-bit and 64-bit)
• Microsoft Windows Server 2008 R2
• Microsoft Windows Server 2008
• Microsoft Windows Vista (32-bit and 64-bit)
• Microsoft Windows Server 2003 R2
• Microsoft Windows Server 2003
• Microsoft Windows XP (32-bit and 64-bit)

Note: ISL Light Desk 4.0.5 was the last version to support Microsoft Windows XP, Microsoft Windows Server 2003 and Microsoft Windows Vista.

Note: ISL Light Desk 3.5.6 was the last version to support Microsoft Windows 2000.

Note: ISL Light Desk 3.2.6 for Windows was the last version to support Windows 95, Windows 98, Windows Millennium and Windows NT 4.0.

Note: Windows devices with ARM architecture are not supported.

Mac OS

• macOS 10.13 High Sierra
• macOS 10.12 Sierra
• OS X 10.11 El Capitan
• OS X 10.10 Yosemite
• OS X 10.9 Mavericks
• OS X 10.8 Mountain Lion
• OS X 10.7 Lion
• OS X 10.6 Snow Leopard 

Note:  ISL Light Desk 3.3.2 for Mac was the last version to support OS X 10.5.

Note: ISL Light Desk 3.3.1 for Mac was the last version to support OS X 10.4 and PowerPC Macs.

Linux

• Linux kernel 2.4 and higher (64 bit)
• glibc 2.12 or newer
• systemd
• X Window System

Tested on: 

• Ubuntu 16.04, 18.04, 20.04
• Debian 10, 9
• CentOS 8

Not supported:

• Wayland
• Linux 32-bit
• arm64 architecture

Note: Linux systems require X Window System to run ISL Online's applications.

Note: ISL Light Desk 3.3.0 for Linux is the first version to support 64-bit Linux operating systems.

Internet Connection

Bandwidth minimum: 56 Kbps

Supported connection methods (ISL Light can work with any of the following):

• direct outgoing TCP/IP connection to TCP port 7615  on ISL Conference Proxy server
• WININET HTTPS connection to TCP port 443 on ISL Conference Proxy server
• WININET HTTP connection to TCP port 80 on ISL Conference Proxy server
• direct HTTPS connection to TCP port 443 on ISL Conference Proxy server
• direct HTTP connection to TCP port 80 on ISL Conference Proxy server

Timeout for a specific connection method is 20 seconds for connection establishment - so total timeout for connection is less than 1 minute.

Supported network types are the following:

• a computer with a static public IP
• a computer with a dynamic public IP
• a computer in a private network behind a firewall with a public IP performing NAT
• a computer in a private network behind a http proxy offering http and/or https protocols

Web Browsers

• Firefox
• Google Chrome
• Microsoft Edge
• Microsoft Internet Explorer
• Opera
• Safari