Would you like a checklist in PDF format, or help diagnosing your specific Moldflow version?
The Autodesk Moldflow Error 99998 typically occurs when the software cannot find or check out a required license for the solver (Insight) or the UI (Synergy). This can happen if the license configuration is incomplete, the license server is unreachable, or the license has simply expired. Primary Fixes for Windows
Run License Configuration: This is the most common fix for versions 2021 and newer. Close all instances of Moldflow.
In the Windows Start Menu, go to the Moldflow Insight 202X folder and select License Configuration 202X.
Verify the Network License is selected, set the correct license level (Standard, Premium, or Ultimate), and ensure the License Server hostname is correct. Click Apply and then OK.
Check LMTools Server Status: Use LMTools on the license server to confirm the Insight solver license (MFIB, MFIP, or MFIA) is active and not expired.
Clear Stuck Solver Tasks: Sometimes a "rogue" task remains in the background, holding a license. Open Task Manager and end any processes named flow.exe, cool.exe, warp.exe, or mhb3d.exe.
Increase License Timeout: If the connection to the server is slow, add a system environment variable named FLEXLM_TIMEOUT with a value of 10000000 (10 million) to give the server more time to respond. Fixes for Linux Installations
Install License Configuration Package: For Linux, the Insight solver requires a separate license configuration package (included in the download files) to be installed.
Update ADSK_SERVICE_ADDRESS: Ensure the environment variable ADSK_SERVICE_ADDRESS points to the correct hostname and port (usually in host:port format) in the mfclient.env (thin client) or /etc/opt/Autodesk/ami20XX (workstation) file. Other Common Causes
Autodesk Moldflow Error 99998 typically means that the required license for the solver (Insight) or Adviser is unavailable, expired, or currently maxed out by other users.
Here is how to troubleshoot and resolve it based on common causes: 1. Check License Availability & Status
The most common cause is simply that all available seats are in use or the license has expired.
Use LMTools: Open the Autodesk License Manager (LMTools) on your server. Go to the Server Status tab and click Perform Status Inquiry. Check for codes like MFIB, MFIP, or MFIA to see if seats are available.
Kill Rogue Processes: If licenses appear stuck, open Task Manager and end any lingering solver processes like flow.exe, cool.exe, or warp.exe. 2. Verify License Configuration
If seats are available but the error persists, the software might be looking in the wrong place.
Run MLC Utility: On Windows, go to the Start Menu > Autodesk Moldflow Insight/Adviser > License Configuration. Ensure the "License Mode" (Network/Named User) and "License Levels" (Standard, Premium, or Ultimate) match your actual subscription.
Check the Server Name: In the same utility, verify the server name or IP address is correct. Use the format port@servername (e.g., 27000@yourserver) if a custom port is required. 3. Connection & Network Issues
Sometimes a firewall or a slow network prevents the "handshake" between your computer and the license server.
Open Firewall Ports: Ensure ports like 2080 and 27000-27009 are open. Different versions may require specific ports, such as 44100 and 44200 for Moldflow 2023.
Increase Timeout: If you're on a slow connection (like a VPN), the request might be timing out. Create a system environment variable named FLEXLM_TIMEOUT and set its value to 10000000 (10 million). 4. Linux-Specific Fixes If you are running solvers on a Linux machine:
Install Configuration Package: Ensure the Insight Licensing Configuration package is installed on the Linux system.
Check Service Address: Verify that the ADSK_SERVICE_ADDRESS variable in your ami20XX or mfclient.env file points to the correct licensing service.
Are you running a specific version of Moldflow (e.g., 2024, 2025) or using a specialized licensing setup like Token Flex?
Autodesk Moldflow Error 99998 is a licensing error indicating that the Insight solver cannot find or access the required license to run an analysis. This most often happens because the solver (Insight) and the user interface (Synergy) use separate licenses, and the solver has not been correctly pointed to the license server. Primary Causes
Missing Solver License: Your license file might only include seats for Synergy (UI) but not the Insight solver (MFIB, MFIP, or MFIA).
Incorrect License Configuration: The solver is not configured with the correct license server name or IP address.
License Level Mismatch: You may have installed an update for a different license level (e.g., Premium vs. Ultimate) than what you actually own.
Network/Firewall Blocks: A firewall or VPN might be preventing the solver from communicating with the license server. autodesk moldflow error 99998 best
Request Timeouts: The solver stops waiting for a license response before one is received. Core Troubleshooting Steps
The infamous Autodesk Moldflow error 99998!
Error 99998 is a generic error code in Autodesk Moldflow, which can be frustrating to encounter. While Autodesk doesn't provide a detailed explanation of this error, I'll summarize some helpful insights and potential solutions based on user experiences and forums.
What is error 99998 in Autodesk Moldflow?
Error 99998 typically occurs when there is an issue with the mesh, model, or analysis settings. It's a catch-all error that can manifest due to various reasons, including:
Troubleshooting steps:
To resolve error 99998 in Autodesk Moldflow, try these steps:
Additional tips:
By following these steps and tips, you should be able to resolve error 99998 in Autodesk Moldflow and get back to simulating and optimizing your injection molding process.
Error 99998 is a generic signal that the mathematical model is broken. By systematically validating the mesh integrity and simplifying the process logic, the user can almost always identify the specific element or setting causing the abort. Start with the mesh; if the mesh is valid, check the logic.
Troubleshooting Autodesk Moldflow Error 99998 Error 99998 in Autodesk Moldflow is a licensing error indicating that the required solver license is not available or all existing licenses are currently in use. It typically occurs when the Insight solver (which handles the heavy calculations) cannot verify its license with the server, even if the Synergy user interface is open and working. Quick Fixes for Common Scenarios
Depending on your operating system and setup, follow these primary solutions provided by Autodesk Support: 1. Windows: Reconfigure License Settings
Most 99998 errors are caused by incorrect server information or an unset license level.
Launch License Configuration: Go to Windows Start Menu > Autodesk Moldflow Insight 202X > License Configuration 202X. Verify Settings: Ensure Network License is selected.
Set the Insight License Level (Standard, Premium, or Ultimate) to match your purchased entitlement. Confirm the License Server Hostname is correct.
Apply Changes: Click Apply, then OK, and restart your analysis. 2. Linux: Install License Configuration Package
For Linux users, this error often occurs because the license configuration helper was missed during a manual installation.
Install the Package: Ensure the autodesk-moldflow-insight-license-configuration package is installed and matches your solver version.
Update License Server: Use the AdskLicensingInstHelper to manually set the server if the GUI is unavailable:./AdskLicensingInstHelper change --prod_key [YourKey] --prod_ver [YourVersion] --lic_servers [ServerName]. 3. Resolve Connection Timeouts
If the license request times out before reaching the server, the analysis will fail with Error 99998. Solved: ** ERROR 99998 - Forums, Autodesk
Autodesk Moldflow Error 99998 typically indicates that the Insight solver license is unavailable , expired, or incorrectly configured
. This is distinct from the Synergy (UI) license, and both must be correctly active to run an analysis Autodesk Community, Autodesk Forums, Autodesk Forum Top Solutions for Error 99998 Verify License Availability License Manager Tool (LMTools) on your server to perform a "Status Inquiry"
. Confirm that the Insight solver (MFIB, MFIP, or MFIA) is listed and not expired Run License Configuration
: Many 2023 and newer version errors occur because the local License Configuration utility has not been set up License Configuration 202x tool from the Windows Start menu Network License Set Insight to the correct level ( Standard, Premium, or Ultimate ) and enter the correct server hostname Check Product Keys
: Ensure the correct product key was used during installation
. Synergy and Insight require separate, version-specific product keys (e.g., the 2017 key will not work for 2018) Autodesk Community, Autodesk Forums, Autodesk Forum Clear "Rogue" Tasks
: Sometimes a license remains "stuck" to a crashed process. Open Task Manager and end any lingering solver tasks like to release the license Common Causes to Investigate Server Connectivity
: The client machine cannot find the license server on the network or is blocked by a firewall/antivirus License Level Mismatch Would you like a checklist in PDF format,
: The analysis requires a higher license level (e.g., Ultimate) than what is currently configured Concurrent Use
: All available licenses are currently in use by other machines Environment Variables (Linux) : On Linux systems, ensure the ADSK_SERVICE_ADDRESS is correctly set in the mfclient.env specific product keys
for different Moldflow versions to verify your installation?
While running a high-stakes simulation in Autodesk Moldflow, encountering the cryptic "Error 99998" can be a major roadblock. This error is a generic "unexpected termination" signal, meaning the solver crashed before completing the analysis. Because it acts as a catch-all for various internal failures, finding the "best" fix requires a systematic approach to troubleshooting.
Here is the definitive guide to resolving Autodesk Moldflow Error 99998 and getting your studies back on track. Check Local System Resources
The most common cause for an unexpected solver crash is a lack of hardware resources. If the solver cannot access the memory or disk space it needs, it will shut down abruptly.
Free Up Disk Space: Moldflow generates massive temporary files during calculation. Ensure your "Temporary Directory" (defined in Simulation Job Manager or Synergy preferences) has at least 50GB to 100GB of free space.
Monitor RAM Usage: For complex parts with high element counts, you may be exceeding your physical RAM. Close unnecessary background applications or increase your system's virtual memory (page file).
Clear Temporary Files: Navigate to your temporary folder and delete old .trm, .msh, and .res files from previous failed runs to prevent file path conflicts. Audit Your Mesh Quality
A "bad" mesh is the leading technical cause of Error 99998. If the solver encounters an element with zero volume or extreme distortion, the mathematical matrix becomes unsolvable.
Scan for Overlaps: Use the Mesh Repair Wizard to find and fix overlapping elements or intersections.
Fix Aspect Ratios: High aspect ratio elements (above 50:1 for Dual Domain or 100:1 for 3D) can cause the solver to "diverge" and crash. Aim for an average aspect ratio below 3:1.
Check for Connectivity: Ensure there are no disconnected nodes or "islands" in your mesh. A "Connectivity Diagnostic" should show a single continuous body. Reset the Simulation Job Manager (SJM)
Often, Error 99998 isn't a problem with your model, but a glitch in the communication between Synergy (the UI) and the Solver.
Restart Services: Open the Windows Task Manager, find the "Simulation Job Manager" service, and restart it.
Check Firewall Settings: Ensure that flow.exe, cool.exe, and warp.exe have full permissions to communicate through your firewall. Even local simulations use "internal" network ports that can be blocked by overly aggressive security software.
Update the SJM: Autodesk frequently releases patches for the Job Manager. Ensure you are running the latest version available via the Autodesk Desktop App or Account Portal. Simplify Analysis Settings
If the error persists, the solver may be struggling with a specific physical calculation. Try simplifying your parameters to isolate the cause:
Toggle Inertia/Gravity: If you have "Inertia effects" or "Gravity" turned on in the Solver Statistics, try turning them off.
Material Data: Check if your material UDB file is corrupted. Try running the simulation with a "generic" material from the Moldflow library; if it works, the issue lies in your custom material data.
Time Steps: If you are using manual time steps for a transient cool or warp analysis, try switching back to "Automatic" to see if the solver can find a stable path. The "Clean Slate" Method
If none of the above works, the study file itself might be corrupted. Export your mesh as a .udm or .pat file. Create a brand-new Moldflow project. Import the mesh into a fresh study. Re-apply your injection points and process settings. Launch the analysis.
By stripping away the metadata associated with the old project, you often bypass the specific internal conflict triggering the 99998 error.
If you can share a few more details, I can provide a more tailored solution:
The exact point it crashes (e.g., 5% into Filling, during Cooling)? The Analysis Technology you're using (Dual Domain vs. 3D)?
Any specific warnings in the Analysis Log right before the error?
Moldflow is a memory-intensive application. Error 99998 often appears when the solver requests memory that the system cannot allocate or access.
| User type | First action | Expected success rate | |-----------|--------------|------------------------| | Beginner | Create new project & re-run | 40% | | Intermediate | Delete temp files + reduce cores to 4 | 70% | | Advanced | Run Mesh Diagnostics → Smooth mesh → Fill only | 90% | Troubleshooting steps: To resolve error 99998 in Autodesk
Key takeaway: Error 99998 is rarely a true solver bug. In 8/10 cases, it is solved by cleaning temp files + mesh repair + switching to local drive.
Would you like a checklist-style PDF of this report or a copy-paste script to clean Moldflow temp files automatically?
Autodesk Moldflow Error 99998 typically indicates that the software cannot find a valid license to run the simulation solver. This happens even if the user interface (Synergy) is open, as the solver (Insight) requires its own separate license check when a job starts. Autodesk Community, Autodesk Forums, Autodesk Forum Quick Fixes for Error 99998 Run the License Configuration Tool : This is the most common fix for versions 2021 and newer. Navigate to C:\Program Files\Autodesk\Moldflow Synergy 202X\bin\mlc.exe License Configuration in your Windows Start Menu. Verify the License Mode (Network), License Level (Standard, Premium, or Ultimate), and Server Name are all correct. Check License Availability
utility on your license server to perform a "Status Inquiry". Confirm that the Insight solver licenses (e.g., ) are listed and not fully in use by other team members. Restart the Simulation Compute Manager (SCM)
: If the SCM cannot communicate with the licensing service, the job will fail immediately. Restart the Autodesk Simulation Compute Manager service in the Windows Services manager. Clear Rogue Processes
: Sometimes a previous crash leaves "ghost" solver tasks running (like
), which continue to hold a license. Use Task Manager to end these processes and free up the license seat. Why This Happens Missing Product Keys
: Insight and Synergy require separate product keys during installation; if the solver was installed with the wrong key, it won't pull a license. Firewall/VPN Interference
: Security software or a VPN may block the communication between your workstation and the license server. Expired Maintenance
: If your subscription has lapsed, the server will no longer issue valid tokens for the solver.
For detailed troubleshooting on specific operating systems, refer to the Autodesk Support Article for Windows Linux Guide diagnosing your license server logs to see if specific users are hogging all the seats?
Error 99998 in Autodesk Moldflow is a licensing error that indicates the software cannot find a valid license for the solver (Insight). This prevents the analysis from starting even if the user interface (Synergy) is open and working correctly. Primary Causes
License Configuration: The license level (Standard, Premium, or Ultimate) or server information hasn't been set up correctly in the local configuration tool.
Network and Communication: The solver cannot reach the license server due to firewall blocks, incorrect IP/server names, or network time-outs.
Solver vs. UI Mismatch: Using separate servers for Synergy (UI) and Insight (Solver) can cause conflicts if the solver isn't manually pointed to its specific server.
Expired or Missing Licenses: The solver license (e.g., MFIB, MFIP, or MFIA) is missing from the license file or has expired. Best Practices for Troubleshooting
To resolve this error, follow these steps in order of complexity: Verify License Configuration
For 2023 versions and newer, go to the Windows Start Menu > Autodesk Moldflow Insight > License Configuration.
Ensure the License Mode, Level, and Server Name are correct. Apply changes and restart the software. Check Server Connectivity
Verify that the license server is running and reachable. Use LMTools on the server machine to perform a Status Inquiry and confirm the Insight solver licenses are listed.
Ensure the required firewall ports (typically 2080 and 27000-27009) are open for both inbound and outbound traffic. Adjust Timeout Settings
If the license request is timing out, create a system environment variable named FLEXLM_TIMEOUT with a value of 10000000 (10 million) to allow more time for the server to respond. Manual Server Pointing
If the Insight license resides on a different server than the UI, use the Autodesk Licensing Installer Helper via Command Prompt to manually set the server for the specific product key (e.g., 573O1 for Insight Standard 2023). Reset Simulation Job Manager (SJM)
Sometimes the database or cache of the SJM can become corrupted. Resetting the database can resolve persistent licensing "handshake" issues.
For more specific scenarios, such as Linux deployments, ensure the License Configuration Package is installed and the ADSK_SERVICE_ADDRESS is correctly set in the environment files.
Are you running your analysis on a local machine or submitting it to a remote job server? Solved: ** ERROR 99998 - Moldflow Insight Forum
Resolving Autodesk Moldflow Error 99998: A Comprehensive Guide
Encountering error 99998 while working with Autodesk Moldflow can be frustrating, especially when it disrupts your workflow and delays project completion. This error is often associated with issues that prevent Moldflow from functioning correctly, ranging from software installation problems to data corruption or compatibility issues. Here’s a step-by-step guide to help you troubleshoot and resolve error 99998 efficiently.
The mesh is the mathematical foundation of the simulation. If the geometry is poorly discretized, the solver cannot solve the finite element equations.