If you have tried all fixes above and still see Error 85440, gather:
Open a case at Autodesk Support and request escalation to the Licensing Team. Reference Error 85440 and your evidence.
Sometimes the client computer tries to resolve the server name to an IP address and gets it wrong.
The client can find the server, but the network packets are being dropped. autodesk network license not available error 85440
Typical signs:
Why it happens: Autodesk NLM uses two critical ports:
If either port is blocked by Windows Defender Firewall, corporate hardware firewalls, or third-party security software (McAfee, Symantec, CrowdStrike), Error 85440 appears. If you have tried all fixes above and
If the server is running but the client gets the error, the license file itself might be invalid or expired.
On the license server (Windows Defender Firewall):
On client workstations:
For corporate hardware firewalls (if server is in a data center):
Use free tools like PRTG or PA File Sight to monitor TCP 2080 and 27000 availability. Set alerts for downtime.