Give me the part details and the full error context I should assume, then I’ll provide a step-by-step troubleshooting plan and corrective actions.
I’ll assume a common scenario and start right away:
If your model includes beam elements (runners or cooling channels) connected to 3D Tetrahedral elements:
Moldflow uses a default temp folder on your C: drive. If C: is a small SSD, it will fill up quickly.
Solution:
mfsu -temp "D:\Moldflow_Temp" (change D: to a large, fast drive).Date: YYYY-MM-DD
Software: Autodesk Moldflow [Insight/Synergy] [Version]
License Type: [Ultimate/Adviser/Design]
Analysis Type: [Fill/Pack/Warp/Cool]
Error 99998 is often a false positive in newer Moldflow versions. The solver fails to write a file for another reason (permissions, memory, corrupted data) and incorrectly reports “disk full.” Always check the solver log (study_name.out) for the real error occurring just before 99998.
If the problem persists, contact Autodesk Support with your .mfs study file, .out log, and .txt diagnostic file. They have internal debugging tools for this specific error code. autodesk moldflow error 99998 full
Autodesk Moldflow Error 99998 generally indicates that the solver cannot access a required license. This can occur if all licenses are currently in use, the license has expired, or the software cannot communicate with the license server. Common Causes
License Availability: All AMI_STANDARD, PREMIUM, or ULTIMATE seats are occupied.
Server Communication: The license server is down, or firewall ports (e.g., TCP 44100/44200 for 2023) are blocked.
Configuration Issues: The licpath.lic file contains the wrong server name or IP address.
Installation Errors: An incorrect product key was used, or the License Configuration tool hasn't been run.
System Time: There is a significant time/date discrepancy between the client and the server. Step-by-Step Troubleshooting Check License Status Open LMTools on your server.
Navigate to the Server Status tab and click Perform Status Inquiry. Give me the part details and the full
Verify if your solver licenses (MFIA, MFIB, or MFIP) are listed and if any seats are available. Clear Rogue Processes
If licenses appear "in use" but no jobs are running, open Task Manager.
End any instances of flow.exe, cool.exe, warp.exe, or mhb3d.exe that are at 0% CPU. Restart the adskscm (Simulation Compute Manager) service. Run License Configuration Utility
Go to Windows Start Menu > Autodesk Moldflow Insight 202x > License Configuration 202x.
Ensure the "Network License" is selected and the server hostname is correct (use port@server if using a custom port). Set Environment Variables
If requests are timing out, create a system variable named FLEXLM_TIMEOUT with a value of 10000000 (10 million) to give the server more time to respond.
Ensure ADSKFLEX_LICENSE_FILE is correctly set in your system variables. Verify Firewall Ports The Issue: If the beam diameter is significantly
Ensure the following TCP ports are open based on your version: 2023: 44100, 44200 2021: 43100, 43200 2017-2019: 43911, 42911, 43921
For more detailed technical solutions specific to Linux or Cloud environments, visit the Autodesk Support Page.
Are you running this analysis on a local machine or a remote solver?
Autodesk Moldflow Error 99998 is one of the most dreaded errors in injection molding simulation. It is a "fatal" error that causes the solver to crash immediately, often without generating a results file.
Unlike specific warnings (like "short shot" or "air traps"), Error 99998 is a generic crash code indicating that the solver encountered an unexpected mathematical condition (like dividing by zero) or a memory violation that it could not handle.
Here is a full review of the causes, diagnostic steps, and solutions for Moldflow Error 99998.