If you need to read the official documentation directly from Autodesk, the relevant article is titled "Troubleshooting network license issues for Autodesk software".
You can find it via the Autodesk Knowledge Network here: Autodesk Knowledge Network - Network License Troubleshooting
Note: If the specific error code is not listed in the main article, search the Autodesk site for "Error [-85440]" specifically, as it usually points to the license file being unreadable or the vendor daemon being down.
The Autodesk Network License Not Available Error [-8.544.0] typically occurs due to license type mismatches, server connection issues, or outdated licensing components. Common Causes
License Type Mismatch: The user is assigned a different license type (e.g., Single-user instead of Multi-user) in the Autodesk Account portal.
Outdated Network License Manager (NLM): The server is running an older version of LMTOOLS that is incompatible with the client's licensing service.
Registry Errors: Incorrect registry values for the ADSKFLEX_LICENSE_FILE.
Options File Restrictions: Restrictions within the server's options file may be preventing access for specific users. How to Fix Error [-8.544.0] How to change or reset a license for Autodesk software
Troubleshooting Autodesk Network License Not Available Error 85440 autodesk network license not available error 85440 link
Are you experiencing issues with your Autodesk software due to a network license error? Specifically, are you encountering Error 85440, which indicates that the network license is not available? Don't worry; we're here to help you resolve this issue.
What is Error 85440?
Error 85440 occurs when Autodesk software is unable to connect to the network license server, which is required to validate the software license. This error can occur due to various reasons, including:
Troubleshooting Steps
To resolve Error 85440, follow these step-by-step troubleshooting guides:
Advanced Troubleshooting
If the above steps don't resolve the issue, try:
Still Having Issues?
If none of the above steps resolve the Error 85440 issue, you may want to:
By following these troubleshooting steps, you should be able to resolve the Autodesk Network License Not Available Error 85440 issue and get back to working with your Autodesk software.
The software is set to look for a network (multi-user) license, but the user is actually assigned a named-user (single-user) license in their Autodesk Account Options File Restrictions:
An options file on the license server may be excluding the specific user or computer. Registry Errors:
An invalid value in the Windows Registry is pointing the software to an incorrect or non-existent license server. Version Incompatibility:
The server's Network License Manager (LMTOOLS) is outdated and cannot communicate with the newer Autodesk Licensing Service on the client machine. Recommended Solutions Reset License Type:
If you should be using a "Sign In" license instead of a network one, use the Autodesk Licensing Support Tool to reset the license type and select Single-user upon relaunching. Clear Registry Values: Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\FLEXlm License Manager Delete the ADSKFLEX_LICENSE_FILE
Restart the product and provide the correct license server information if prompted. Update Licensing Components: Ensure you have the latest Autodesk Desktop Licensing Service installed. For network setups, the server's should be version 11.18 or higher Check Permissions: Navigate to C:\ProgramData\Autodesk\Adlm , right-click ProductInformation.pit , and under Properties > Security > Advanced , ensure "Enable inheritance" is active. Are you the experiencing this on your machine, or are you the administrator managing the license server? If you need to read the official documentation
The product license is no longer available. What do you want to do?
| Check | Status | Action |
| :--- | :--- | :--- |
| Server Status | Is LMGRD running? | Restart Service / Reboot Server. |
| Vendor Port | Is it static? | Edit .lic file to add port=xxxx. |
| Firewall | Are ports 2080/2081 open? | Create Inbound/Outbound rules. |
| Client Env Var | Is the server name correct? | Use @servername syntax. |
| Version Mismatch | Is the product newer than the license? | Update license file or use older software. |
On the client computer (the one getting error 85440), open Command Prompt (as Admin) and ping the license server:
ping [ServerName]
Example: ping lic-server-01
Autodesk Network License Error -85440 is a client-side connectivity error. It generally indicates that the Autodesk software installed on the user’s machine (the client) is unable to establish a stable connection to the Network License Manager (NLM) server to request a license token.
Unlike error -96 (which denotes a lack of available licenses), or error -15 (which denotes a blocked connection), Error -85440 is often related to protocol mismatches, server configuration drift, or corrupted client-side environment variables.
This document outlines the root causes, diagnostic steps, and resolution strategies for system administrators and CAD managers.
If you are working from home via VPN, the link often fails because: Troubleshooting Steps To resolve Error 85440, follow these
Solution: