Autodesk NLM communicates using specific TCP ports. By default, these are (for lmgrd) and 27000-27009 (for the vendor daemon adskflex).
If the error persists, the issue might be a faulty or expired license file asset on the server itself. Open your .lic file on the server using Notepad.
The first step is to ensure the is running on the server. Open the LMTOOLS utility on your license server. autodesk network license not available error 85440
SERVER servername 123456789abc 27000 VENDOR adskflex port=2080 Use code with caution.
Often, a firewall is blocking the "handshake" between the client and server. Autodesk licensing uses two specific ports: Used by the Master Daemon (lmgrd.exe). Autodesk NLM communicates using specific TCP ports
This tool, installed on the license server, provides a diagnostic of the license manager's health.
Expected result: TcpTestSucceeded : True Open your
On the license server machine:
Install the update, restart the license service via the tab, and click ReRead License File . Step 2: Configure Client-Side Environment Variables
Which (e.g., AutoCAD 2024, Revit 2025) is throwing the error?
The client machine cannot communicate with the server due to network restrictions. The server is not running or not properly configured.