NI IVI Compliance Package 21.0 Readme

July 2021

This file contains important information about the IVI Compliance Package (ICP), including installation instructions, new features, a list of bugs fixed for ICP 21.0, and known issues.

You can find more release information on

If you plan to use LabVIEW NXG, refer to LabVIEW NXG Support and Considerations.


Installed Components

Supported Operating Systems

Application Software Support

Installation Instructions

Uninstall Considerations

Product Security and Critical Updates

New Features

Known Incompatibilities

LabVIEW NXG Support and Considerations

Automating the Installation of NI Products

Using NI Software with Microsoft Windows 10

Legal Information


The IVI Compliance Package is a software package that contains the IVI class drivers and support libraries necessary to develop and use applications that leverage IVI instrument interchangeability. The IVI Compliance Package also is based on and is compliant with the latest version of the instrument programming specifications defined by the IVI Foundation. You can use the IVI class drivers in the IVI Compliance Package with IVI specific drivers.

IVI class drivers implement functions and attributes for controlling an instrument within a specified class, as defined by the IVI Foundation. The IVI Compliance Package provides IVI class drivers for the following specifications:

  • IviACPwr
  • IviCounter
  • IviDCPwr
  • IviDigitizer
  • IviDmm
  • IviDownconverter
  • IviFgen
  • IviPwrMeter
  • IviRFSigGen
  • IviScope
  • IviSpecAn
  • IviSwtch
  • IviUpconverter

IVI specific drivers are drivers for the most popular instruments from all of the currently defined IVI Foundation classes and from the largest instrument manufacturers including National Instruments, Keysight Technologies, and Tektronix. You can create IVI specific drivers yourself, or download them from

Installed Components

Depending on the software support you select when you install ICP 21.0, the installation includes one or more of the following components:

  • IVI class drivers
  • IVI class simulation drivers
  • IVI class driver LabWindows/CVI support
  • IVI class driver wrappers for LabVIEW 2018, 2019, 2020, and 2021
  • IVI class driver wrappers for LabVIEW NXG 5.0
  • IVI class driver examples for LabWindows/CVI, LabVIEW, and Measurement Studio
  • IVI-COM adapters (32-bit only)
  • IVI.NET adapters
  • IVI Shared Components 2.6.1
  • IVI.NET Shared Components 1.4.1
  • IVI configuration plug-in for Measurement & Automation Explorer (MAX) 4.7 and later
  • Documentation

Supported Operating Systems

ICP supports the following operating systems:

  • Windows 10
  • Windows Server 2019
  • Windows Server 2016
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • CentOS 8
  • CentOS 7
  • openSUSE Leap 15.2
  • openSUSE Leap 15.1
  • Ubuntu 20.04
  • Ubuntu 18.04

Note  ICP no longer supports Windows Vista/XP/7/8.x, Windows Server 2003/2008/2012, or any 32-bit Windows operating system. ICP 21.0 will not install or run on an unsupported OS. You cannot deploy or distribute applications that use ICP 21.0 to an unsupported OS. Additionally, after installing ICP 21.0, you cannot use any installers built on this computer with any version of LabVIEW, LabWindows™/CVI™, NI TestStand™, or Measurement Studio on an unsupported OS.

For more information about the changes to our OS support, visit

Application Software Support

ICP supports the following application software versions, including service packs. If you are not using NI application software, refer to Microsoft Visual Studio Support.

Application Software Versions Supported by ICP
LabVIEW 2018, 2019, 2020, 2021, and NXG 5.0, 5.1
NI LabWindows™/CVI™ 2017, 2019, 2020

Installation Instructions

Download the IVI Comliance Package installer from NI software includes NI Package Manager to handle the installation. Refer to the NI Package Manager Manual for more information about installing, removing, and upgrading NI software using NI Package Manager.


  • If Windows Update is enabled, the installation process might hang if Windows Update interferes with the installation of Microsoft Visual C++ 2015 Run-Time. Visit for more information and steps to resolve this issue.

To install the stand-alone, web-only version of ICP, complete the following steps:

  1. Download the ICP 21.0 self-extracting archive file from by searching for IVI Compliance Package.
  2. Double-click the self-extracting archive file to launch the installer.
  3. Click OK to begin installation.
  4. Follow the directions that appear on the screen.

Installing ICP for LabVIEW NXG

You can install ICP at the same time that you install LabVIEW NXG. In Package Manager, select LabVIEW NXG and Drivers. Then select IVI Compliance Package from the list of drivers available to install.

Installation Notes

  • The ICP 21.0 stand-alone, web-only distribution does not install NI I/O Trace (formerly known as NI-Spy) or MAX. You can install NI I/O Trace and MAX using several other National Instruments products, including the NI Device Drivers media.
  • The installation directory for LabWindows/CVI IVI Class examples and IVI Class Simulation drivers has been changed. The new installation directory is <All Users>\Documents\National Instruments\CVI\Samples\IVI directory.
  • ICP 3.2 and later include IVI-COM adapters, which enable users to use IVI-C and IVI-COM specific drivers interchangeably in the same 32-bit application. For more information on IVI-COM adapters, refer to the IVI-C Class Driver Support for IVI-COM Specific Drivers document.
  • ICP 19.0 and later includes IVI.NET adapters, which enable users to use IVI-C and IVI.NET specific drivers interchangeably in the same application.
  • ICP 4.5 and later installs alternate FP and SUB files for the IviFgen class driver in order to support setting 64-bit integer attributes. For more information, refer to KnowledgeBase 5WOA752F: Issue Setting IviFgen Attribute ID Using Get/Set/CheckAttributeViInt64 Functions.

Uninstall Considerations

After you uninstall ICP 21.0, the IVI Shared Components remain on the system. To remove the remaining components, right-click IVI Shared Components 2.6.1 and select Uninstall/Change.

If you installed ICP 21.0 as part of another distribution that depends on ICP 21.0, you cannot uninstall ICP 21.0 without uninstalling the dependent product.

Product Security and Critical Updates

Visit to view and subscribe to receive security notifications about NI products. For information about critical updates from NI, refer to Available Critical and Security Updates for NI Software.

New Features

This release includes the following new features:

  • Added support for LabVIEW 2021 and LabVIEW NXG 5.0

Known Incompatibilities

  • In ICP 19.5 and IVI Shared Components 2.6 or later, the installers no longer unlock the IVI Foundation directory. Therefore, you no longer can modify the files installed under the IVI Foundation directory.

LabVIEW NXG Support and Considerations.

The following sections detail considerations for using LabVIEW NXG 5.0 with ICP 21.0.

LabVIEW NXG Operating Systems and System Requirements

Software support for LabVIEW NXG differs in the following ways:

  • System requirements—Only 64-bit (x64) processors are supported.
  • Operating system—Only 64-bit operating systems are supported. Refer to the Supported Operating Systems section for more information.


View context help in LabVIEW by pressing <Ctrl-H> and hovering over an object.

Search for items using the search bar in the upper right corner of the LabVIEW window. You can also view context help for the search results.

Additional documentation is available online at

LabVIEW NXG Examples

Launch LabVIEW and click the Learning tab.

LabVIEW lessons are located in the Lessons tab, and LabVIEW Examples are located in the Examples tab. Follow the instructions in the lessons and examples.

Automating the Installation of NI Products

You can automate the installation of most NI products using command-line arguments to suppress some or all of the installer user interface and dialog boxes.

If the NI product you are installing uses Microsoft .NET 4.6.2, the .NET installer may run before any NI software installs and may require a reboot before the installation of NI software begins. To avoid a .NET reboot, install .NET 4.6.2 separately before you install NI software.

For more information about automating the installation of NI products, refer to Automating an Installer in the NI Package Manager manual.

Using NI Software with Microsoft Windows 10

Microsoft Windows 10 is the latest version of the Windows operating system and features significant changes compared to previous versions. Windows 10 introduces several new capabilities and also combines features from both Windows 7 and Windows 8. For more information about NI support for Windows 10, refer to NI Product Compatibility for Microsoft Windows 10.

Legal Information


©1999–2021 National Instruments Corporation. All rights reserved.

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

NI respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.

End-User License Agreements and Third-Party Legal Notices

You can find end-user license agreements (EULAs) and third-party legal notices in the following locations after installation:

  • Notices are located in the <National Instruments>\_Legal Information and <National Instruments> directories.
  • EULAs are located in the <National Instruments>\Shared\MDF\Legal\license directory.
  • Review <National Instruments>\_Legal Information.txt for information on including legal information in installers built with NI products.

U.S. Government Restricted Rights

If you are an agency, department, or other entity of the United States Government ("Government"), the use, duplication, reproduction, release, modification, disclosure or transfer of the technical data included in this manual is governed by the Restricted Rights provisions under Federal Acquisition Regulation 52.227-14 for civilian agencies and Defense Federal Acquisition Regulation Supplement Section 252.227-7014 and 252.227-7015 for military agencies.

IVI Foundation Copyright Notice

Content from the IVI specifications reproduced with permission from the IVI Foundation.

The IVI Foundation and its member companies make no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The IVI Foundation and its member companies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.


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For patents covering the NI products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the NI Patent Notice at