Sometimes the licensing service simply needs to be restarted.
If running a 3D simulation with a high number of layers across the thickness, reduce the layer count slightly to test stability.
Outdated software components can cause instability with modern hardware.
If Moldflow crashes while saving, it may leave behind a hidden .lock or .lck file. When you reopen the study, the system believes the file is still in use by another process.
Autodesk Moldflow Error 99998 is a licensing-related error that, while frustrating, has a finite set of causes and solutions. By systematically working through the troubleshooting steps outlined in this guide—beginning with the License Configuration utility, verifying version consistency, checking firewall settings, and escalating to more advanced solutions as needed—you can resolve the issue and restore full functionality to your Moldflow environment. autodesk moldflow error 99998
If you want to narrow down the specific cause of your crash, tell me: What are you using? (Dual-Domain or 3D?)
If the crash happens during the first few seconds of the analysis, the mesh is likely at fault. Open your model and navigate to the tab.
Network security software can block the communication between Moldflow components and the license server. Firewalls may prevent the necessary TCP and UDP ports from being accessed, while antivirus programs may quarantine or block Moldflow processes altogether. This is a particularly common issue during the installation process itself, as active security software can prevent critical licensing components from being properly configured.
This speeds diagnosis and helps engineers pinpoint whether the error is a model/setup issue or a software bug. Sometimes the licensing service simply needs to be restarted
Follow these troubleshooting steps in order to identify and resolve the root cause of the crash. Step 1: Clean the Moldflow Temporary Directory
This article provides a deep technical dive into what this error means, why it occurs, and—most importantly—how to resolve it permanently.
) is unavailable or cannot be reached by the solver. This error prevents an analysis from solving and often appears in the analysis log or a pop-up window. Common Causes License Configuration:
Moldflow cannot resolve the name of the license server to its IP address. If Moldflow crashes while saving, it may leave
The screen flickered. The command line interface, usually so clinical and quiet, threw up a wall of red text. At the very bottom, framed by asterisks, was the message:
Autodesk Moldflow Error 99998 is a generic "unspecified error" that occurs during the analysis stage, typically indicating that the solver has crashed or been terminated by the operating system. Because it is a general catch-all code, troubleshooting requires a systematic look at hardware, software environment, and model integrity. Understanding the Root Causes
Verify material and thermal data
Sometimes the project file itself becomes corrupted or points to a path the solver cannot reach.