Keysight IO Libraries Suite 2025 (for Windows)

Contents:

�What is the Keysight IO Libraries Suite?

The Keysight IO Libraries Suite is a collection of libraries and utility programs. The IO libraries (SICL, VISA, VISA.NET, and VISA COM) enable instrument communication for a variety of development environments (Keysight VEE Pro, Microsoft Visual Studio, etc.) that are compatible with GPIB, USB, LAN, RS-232, PXI, AXIe, and VXI test instruments from a variety of manufacturers. Several utility programs help you quickly and easily connect your instruments to your PC.

Establishing communication between your instruments and your PC is as easy as 1, 2, 3:

  1. Install the IO Libraries Suite: Get all the software you need to connect instruments to your PC via GPIB, USB, LAN, and other standard interfaces.
  2. Install Instrument Software and Connect Your Instruments: Install any software and drivers with your instruments. Connect the cables and apply power.
  3. Run Keysight Connection Expert to Identify and Communicate with Instruments: See connected instruments, send commands to your instruments, and configure the settings.

�What's New in Keysight IO Libraries Suite 2025

New Features

Defect Fixes

Feature Obsolescence Note

Here is the list of features no longer supported in IO Libraries Suite 2024 and later versions:

Feature

Details

VXI Interface

IO Libraries Suite 2024 and later versions will no longer support VXI on Windows 8 or 11.

Operating System Support

IO Libraries Suite 2024 and later versions will no longer support  the following operating systems:

  • Windows 7
  • Windows 8 and 8.1
  • Windows 10 32-bit.

IO Libraries Suite Upgrade

Upgrades from IO Libraries Suite 18.0 or earlier versions will not be possible with the upcoming release of the IO Libraries Suite.

 .NET Framework 3.5 Install

Installing .NET Framework 3.5 as a part of IO Libraries is no longer supported.

 

Getting Started

System Requirements

Keysight has tested IO Libraries Suite 2025 on the following system configurations. The product should run on any x86 or x64 (except Itanium) processor. 
Note: Less powerful systems may impact the performance.

#

Operating System

Processor Speed

Available Memory 
(Limited RAM on older PCs can cause longer installation times)

Available Disk Space 
(Minimum disk space required for installation may be higher than actual space utilized)

Minimum Display

1

Windows 11 (64-bit):

  •   Home
  •   Pro
  •   Enterprise

1 GHz 64-bit (x64)
No support for Itanium64 or Windows 11 RT

1 GB minimum

2.5 GB hard disk space:

  •   2 GB for Microsoft .NET Framework 4.6
  •   100 MB for Keysight IO Libraries Suite

1024x768, 96, or 120 DPI

2

Windows 10 (64-bit):

  •   Home
  •   Pro
  •   Enterprise

1 GHz 64-bit (x64)
No support for Itanium64 or Windows 10 RT

1 GB minimum

2.5 GB hard disk space:

  •   2 GB for Microsoft .NET Framework 4.6
  •   100 MB for Keysight IO Libraries Suite

1024x768, 96, or 120 DPI

3

Windows Server

  • Windows Server 2016 (64-bit)/
  • Windows Server 2012 (64-bit, Standard)
  • Windows Server 2019 (64-bit, Standard)
  • Windows Server 2022 (64-bit, Standard)

1.4 GHz (x64 processor)
1.3 GHz (Dual Core)
No support for Itanium64

1 GB minimum

2.5 GB hard disk space:

  •   2 GB for Microsoft .NET Framework 4.6
  •   100 MB for Keysight IO Libraries Suite

1024x768, 96, or 120 DPI

4

Windows Server 2008 R2 SP1 (64-bit):

  •   Standard
  •   Enterprise

1.4 GHz (x64 processor)
1.3 GHz (Dual Core)
No support for Itanium64

1 GB minimum

1.5 GB hard disk space:

  •   1 GB for Microsoft .NET Framework 4.6
  •   100 MB for Keysight IO Libraries Suite

1024x768, 96, or 120 DPI

Installing the Software

The Keysight IO Libraries Suite installation process has undergone a major change. Now there will be 2 installers:

The separate installers allow for more modular installation and easier management of dependencies, potentially reducing the overall installation size and improving flexibility.

To install Keysight IO Libraries Suite:

  1. Download the Prerequisites installer and Main installer from www.keysight.com.
  2. Disconnect any USB instruments, USB/GPIB converters, PXI and AXIe chassis, and FireWire (IEEE 1394)/VXI interfaces connected to your PC.
  3. Close all applications running on the PC.
  4. Install the software:
    Start with the Prerequisites installer and then proceed with the Main installer.

Step-by-Step Installation

Run the executable for each installer and follow the interactive steps to complete the Prerequisites installer first, then the Main installer.

Silent Installation

For detailed information, refer to the  IO Libraries Suite: Silent Installation guide.

  1. Reconnect any devices that you disconnected before installation.

Uninstallation

Program Files Installed by the Keysight IO Libraries Suite Prerequisites Installer

After installing the Keysight IO Libraries Suite Prerequisites installer, the following components will be listed in the Control Panel application manager:

Program Files Installed by the Keysight IO Libraries Suite Main Installer

After installing the Keysight IO Libraries Suite Main installer, the following components will be listed in the Control Panel application manager:

Known Issues

Ivi.Visa.Interop.dll is missing in the 32-bit VISA COM applications. The workaround to fix the issue is as follows:

 

Another way to fix the issue is as follows:

To resolve this issue, you can:

    1. Rebuild your application to target .NET Framework 4.x (recommended).
    2. Modify your application's configuration file by explicitly setting <supportedRuntime> to "v4.0" in yourApplication.exe.config:

<?xml version="1.0" encoding="utf-8"?>

<configuration>

�� <startup>������

����� <supportedRuntime version="v4.0"/>

�� </startup>

</configuration>

This ensures compatibility with IOLS 2025.

We've identified issues when installing or upgrading IO Libraries Suite (IOLS) on systems where the Delinea tool is used. These issues may include failures during installation or upgrading certain IOLS components.

Action Required: If you encounter problems with IOLS installation or upgrades while using Delinea, please contact Keysight Support for assistance. 

Windows on ARM64 does not support the following features:

Reporting a Product Cybersecurity Issue

Keysight is committed to cybersecurity. Ensure your products are secure by following best practices, including keeping Windows updated, using firewalls, and maintaining up-to-date antivirus software. Report any suspected vulnerabilities or cybersecurity issues related to Keysight products through the appropriate channels:

�License Grant

Keysight grants you a non-exclusive license of the Software at no charge pursuant to the terms of the License Agreement. The License Agreement is displayed when you install the software and is available in the IO Libraries Suite Online Help. You may download the Software, and store or run the Software for internal use and purposes by this Agreement and the documentation provided with the Software. Such documentation may include license terms provided by Keysight's third-party suppliers, which will apply to the use of the Software and take precedence over these license terms. In the absence of documentation specifying the applicable license, you may store or run the Software on your PC(s) and instrument(s). If the Software is otherwise licensed for concurrent or network use, you may not allow more than the maximum number of authorized users to access and use the Software concurrently.

Trademarks and Copyright

PCIe� and PCI EXPRESS� are US-registered trademarks and/or service marks of PCI-SIG.

� Keysight Technologies 1983-2025