nlm11.18.0.0-ipv4-ipv6-win64.msi file is the installer for the Autodesk Network License Manager (NLM)
version 11.18.0.0. It is a critical component for organizations using multi-user (network) licenses to manage and distribute Autodesk software seats across a local area network. Core Functionality License Distribution
(FlexNet) technology to manage a "pool" of licenses, allowing multiple users to share a limited number of product seats. Protocol Support
: The "ipv4-ipv6" designation indicates it supports both standard IPv4 and newer IPv6 network configurations. Component Daemons : The installation includes two vital background processes: : The main license server manager. adskflex.exe : The Autodesk-specific vendor daemon. Compatibility & Requirements OS Support
: Verified for use on Windows 10, Windows 11, and Windows Server versions 2019, 2022, and 2025. Product Versioning nlm11.18.0.0-ipv4-ipv6-win64.msi
: This version was notably required for Autodesk 2022–2024 products. Failing to update to at least 11.18 can cause a "0.0.0 error" when launching products. Installation & Configuration
For a clean installation or upgrade, follow these standard steps: Preparation
: If an older version exists, it must be uninstalled via the Control Panel first.
file and follow the wizard instructions. The default installation directory is LMTOOLS.exe Centralized License Hosting: Allows a single server to
utility (typically found on the desktop after install) to configure the server. Service Configuration : Under the Config Services tab, specify the paths for , your Autodesk license file, and a debug log file. Automation Use Services Start Server at Power Up to ensure the licensing service runs automatically. Activation : Go to the Start/Stop/Reread tab to start the server and verify status in the Server Status
For the most up-to-date files and detailed guides, refer to the Autodesk Network License Manager for Windows support page. for common errors like the 0.0.0 code Autodesk Network License Manager for Windows
While the filename is generic enough to belong to several license managers, version 11.18.0.0 is most commonly associated with the ANSYS family of products (including Ansys Fluent, Mechanical, Electronics Desktop, and LS-DYNA). It may also be used by other engineering software that relies on the FlexNet Publisher licensing system from Flexera Software.
Key functions include:
ansyslmd.exe) which validates the actual software entitlements.Double-click nlm11.18.0.0-ipv4-ipv6-win64.msi and follow the wizard.
win64 MSI on a 32-bit Windows system.Before deploying nlm11.18.0.0-ipv4-ipv6-win64.msi, ensure your environment meets these prerequisites:
| Requirement | Specification | | :--- | :--- | | Operating System | Windows Server 2012 R2, 2016, 2019, 2022 or Windows 10/11 (64-bit) | | RAM | Minimum 4 GB (8 GB+ recommended for high-traffic networks) | | Disk Space | 500 MB for the application plus additional space for logs | | Network | Static IPv4 or IPv6 address; stable connection to all client subnets | | Firewall Ports | TCP ports 1055 (lmgrd) and 1056 (vendor daemon) – must be open inbound | | Dependencies | Visual C++ Redistributables for Visual Studio 2015-2022 (x64) |
msiexec /i nlm11.18.0.0-ipv4-ipv6-win64.msi /quiet /norestart LICENSE_FILE="C:\flexlm\license.dat" VENDOR=myvendor
This MSI package installs the vendor daemon and license server manager tools required to host and manage floating network licenses. Key executables included are: 2080) to network
lmgrd.exe – The License Manager Daemon (handles communication between clients and the license server).lmutil.exe – Utility for license status, diagnostics, and troubleshooting.adskflex.exe for Autodesk) – Manilla specific software licenses.