LabVIEW 2020 Readme for macOS

March 2020

This file contains important information about LabVIEW 2020 for macOS, including system requirements, installation instructions, known issues, and a partial list of bugs fixed. LabVIEW 2020 for macOS is available only in 64-bit.

Refer to the NI website for the latest information about LabVIEW.

Refer to the labview/readme directory for readme files about LabVIEW add-ons, such as modules and toolkits.

System Requirements

Installation Instructions

Product Security and Critical Updates

Supported Modules and Toolkits

Supported Drivers

Known Issues

Bug Fixes

Accessing the Help

Legal Information

System Requirements

LabVIEW 2020 for macOS has the following requirements:

macOS Run-Time Engine Development Environment
Processor Intel-based processor Intel-based processor
RAM 256 MB 2 GB
Screen Resolution 1024 x 768 pixels 1024 x 768 pixels
Operating System macOS 10.14 or 10.15 macOS 10.14 or 10.15
Disk Space 257 MB 1.4 GB for the complete installation
Temporary Files Directory N/A LabVIEW uses a directory for storing temporary files. NI recommends that you have several megabytes of disk space available for this temporary directory.
File System Case-insensitive Case-insensitive
  • LabVIEW 2020 for macOS is available only in 64-bit.
  • LabVIEW and LabVIEW Run-Time Engine require 64-bit processors that support SSE2 instructions.

Installation Instructions

Complete the following steps to install and activate LabVIEW for macOS.

Note  If you download the installation image from, you may run into a macOS warning when you double-click the installer to run. Instead, right-click the installer and select Open. When you see the warning message, click Open to run the installer and proceed with the installation.

Are you installing LabVIEW for the first time?

Insert the LabVIEW installation media and follow the onscreen instructions to install LabVIEW. To omit some of these files, click Customize on the Installation Type page.

To install LabVIEW modules and toolkits, refer to the readme of each product for installation instructions. The LabVIEW VI Analyzer Toolkit installs with the LabVIEW Professional Development System for macOS.

You can install NI device drivers from

Are you upgrading from a previous version of LabVIEW?

Refer to the LabVIEW Upgrade Notes for information about protecting existing VIs and projects before installing a new version of LabVIEW, as well as upgrade and compatibility issues and a complete list of new features in LabVIEW 2020.

Note  If you purchased this product with an NI Software Suite or NI Product Bundle, use the installation media that shipped with your purchase to install this product.

Changes to selection rules for named Bundle and Unbundle nodes inside malleable VIs

The rules for how LabVIEW selects cluster elements when you use a Bundle By Name function, Unbundle By Name function, or Unbundle / Bundle Elements Border Node have improved. The improvements may cause existing code to behave differently than you expect when you use these nodes inside a malleable VI. Visit for more information about how these changes impact existing code.

Are you installing LabVIEW patches?

Complete the following steps to install a patch on computers with LabVIEW 2020. Replace f# with the specific patch you are installing.

  1. Close all NI software.
  2. Mount LabVIEW2020f#.dmg and run LabVIEW 2020 f# Patch.
  3. Verify that the patch installs correctly. Select Help»About LabVIEW and look for 20.0.0f# on the right portion of the window.
  4. Repeat these steps for all development systems where you want to install the patch.

Visit LabVIEW 2020 Patch Details for detailed information about all patches available for LabVIEW 2020 and issues fixed in each patch.

Product Security and Critical Updates

Visit for security information about NI products. Visit for information about critical updates from NI.

Supported Modules and Toolkits

LabVIEW 2020 for macOS supports the following modules and toolkits.

  • Control Design and Simulation Module1
  • MathScript Module2
  • VI Analyzer Toolkit3
  • Application Builder3

1 The Control Design and Simulation Module does not support the System Identification VIs, System Identification Assistant, and Control Design Assistant.

2 The MathScript Module does not support the libraries class of MathScript Module functions.

3 The VI Analyzer Toolkit and Application Builder install with the LabVIEW Professional Development System. For the LabVIEW Full Development System, you can purchase and install the VI Analyzer Toolkit and Application Builder with their own separate media.

Refer to the readme of each product for more information about system requirements, installation instructions, and activation.

Supported Drivers

LabVIEW 2020 for macOS supports the following drivers. To use hardware with LabVIEW 2020, install the latest version of the driver for the device.

  • NI-488.2
  • NI-DAQmx Base

Refer to the readme of each driver for more information about system requirements and installation instructions.

Known Issues

You can access the software and documentation known issues list online. Visit LabVIEW 2020 Known Issues for an up-to-date list of known issues.

Bug Fixes

The following items are the IDs and titles of a subset of issues fixed in LabVIEW 2020. This is not an exhaustive list of issues fixed in the current version of LabVIEW. If you have a Bug ID, you can search this list to validate that the issue has been fixed.

ID Fixed Issue
917628 LabVIEW Runtime Engine encounters Worker Thread Limit when using web services on Linux RT-based cRIO.
931175 EXE including 'Std Deviation and Variance' VI is unloadable.
984819 Incorrect behavior when using a Boolean control from the System palette.
984834 LabVIEW Application Builder fails to build a Source Distribution on Windows when using some specific vi.lib VIs that contain non-Windows components.
984861 When making multiple calls to Python function in a For Loop, the Python execution treats the passed data as a list, rather than a NumPy array.
985551 Hovering over an override method in the Project Explorer does not show parent class description if the VI has empty description.
985552 Special characters (\r, \n, etc.) are not correctly converted to JSON when using LabVIEW Web services.
985554 Calling a Channel Write VI by reference in a loop results in a compiler error.

Accessing the Help

Refer to the LabVIEW Help, accessible by selecting Help»LabVIEW Help from LabVIEW, for information about LabVIEW 2020.

Legal Information


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End-User License Agreements and Third-Party Legal Notices

For end-user license agreements (EULAs) and copyright notices, conditions, and disclaimers, including information regarding certain third-party components used in LabVIEW, refer to the Copyright topic of the LabVIEW Help.

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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.

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