Autodesk Moldflow Error 99998 generally indicates that the solver (Insight) cannot communicate with or find a valid license to run the analysis Immediate Fixes Run License Configuration
: For Moldflow 2023 or newer, you must manually set the license level. Close all Moldflow instances. Windows Start Menu Autodesk Moldflow Insight 202x License Configuration 202x Verify the following fields are correct: License Mode : (e.g., Network License). License Level : (Standard, Premium, or Ultimate). License Server : Enter the hostname or IP address (use for local servers). Check the Simulation Compute Manager (SCM)
: Ensure the SCM service is running and that your job limit hasn't exceeded your available licenses (each job consumes a license). Common Causes & Solutions Expired or Missing License
: Confirm your license hasn't expired and that your license file specifically includes (the solver), not just Synergy (the user interface). Incorrect Product Key : Synergy and Insight require separate product keys
during installation. If the wrong key was used for Insight, it will fail to solve. You may need to reinstall with the correct key. Version Mismatch
: Ensure the license level (e.g., Ultimate) matches the update level installed. Installing a "Premium" update over an "Ultimate" installation can trigger this error. Server Connectivity Ensure the Autodesk Network License Manager (LMTools) is the latest version.
Check for firewall or security software blocking the license request.
If using a custom port (e.g., 2080), it must be specified in the client configuration (format port@hostname Advanced Troubleshooting
Autodesk Moldflow Error 99998 generally indicates that the Insight solver license is not available or cannot be reached by the simulation engine
. While "99998 full" isn't a standard technical term, it typically points to a situation where all available license seats are occupied ("full") or the license configuration is blocked.
Here is a short story about an engineer facing this specific error. The Midnight Simulation
The deadline for the new automotive intake manifold was 8:00 AM. Elias had spent three days perfecting the gate locations and cooling channels. All that remained was the final "Fill+Pack+Warp" analysis to confirm the part wouldn't potato-chip after being ejected from the mold. He clicked
. The status bar flickered, then turned an ominous red. He opened the analysis log and there it was, mocked by five digits:
** ERROR 99998 ** Required license for AMI_ULTIMATE is not available, or all licenses are currently in use.
"Full," Elias whispered. In the engineering world, Error 99998 was the equivalent of a "Sold Out" sign at a concert you desperately needed to attend.
He checked the license server status. His colleagues in the European office had just come online, and they were hogging the solver seats for their own DOE (Design of Experiments) runs. Even though his Synergy UI was working fine, the actual "brain"—the Insight solver—was locked out. He tried the classic fixes: Resetting the Job Manager:
He cleared the database and cache files, hoping a ghost job was just stuck in the system. The Config Shuffle: He opened the License Configuration tool
to ensure it was pointing to the correct server IP address and not a hostname that the network couldn't resolve. The Firewall Prayer:
He double-checked that port 2080 wasn't being blocked by a sudden security update.
Finally, at 2:00 AM, a seat opened up. The Europe team had finished their batch. Elias hit Analyze one last time. The log stayed clean, the solver began its calculations, and the "full" error vanished into the digital ether. Common Solutions for Error 99998: Check License Availability: LMTOOLS utility
to see if all solver seats (MFIA/MFIB/MFIP) are currently in use. License Configuration:
(License Configuration) tool from the Moldflow installation folder to re-link your software to the network license server Environmental Variables: ADSKFLEX_LICENSE_FILE is correctly set in your system environment to point to @your_server_name command-line steps
to reset your Simulation Compute Manager or check your license status in
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. autodesk moldflow error 99998 full
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.
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
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?
Troubleshooting Autodesk Moldflow Error 99998: A Comprehensive Guide
Encountering Error 99998 in Autodesk Moldflow is a common hurdle for engineers, typically indicating that the required license for the solver (Insight) or adviser is not available. This error usually appears in the analysis log or summary results when an analysis starts, preventing the simulation from running. Common Causes of Error 99998
Understanding why this happens is the first step toward a fix. Frequent triggers include:
Missing Insight License: Your license file might include the user interface (Synergy) but lack the actual solver (Insight).
License Exhaustion: All available seats for your specific Moldflow level (Standard, Premium, or Ultimate) are currently in use by other team members.
Configuration Errors: The Moldflow Insight License Configuration has not been run or is pointing to the wrong server.
Network Connectivity: The client machine cannot find the license server due to firewall blocks, VPN issues, or DNS resolution failures.
Mismatched Product Keys: Using an incorrect product key during installation—such as a 2023 key for a 2024 version—can cause this failure. Step-by-Step Fixes for Windows Users 1. Run the License Configuration Tool
For versions 2021 and newer, you must explicitly configure the solver license: Open the Windows Start Menu. Autodesk Moldflow Error 99998 generally indicates that the
Navigate to Autodesk Moldflow Insight 202x > License Configuration 202x. Select Network License.
Choose your correct license level (e.g., Ultimate) and enter the hostname of your license server. Click Apply and restart your analysis. 2. Verify License Availability via LMTools
Use the Autodesk License Manager Tool (LMTools) to check your server status:
Go to the Server Status tab and click Perform Status Inquiry.
Ensure that the Insight solver feature (e.g., MFIB, MFIP, or MFIA) is listed and has available seats. Check for "expired" messages in the status log. 3. Update the Autodesk Licensing Service
An outdated or corrupted licensing service can block communication:
Uninstall the current service and download the latest version from the Autodesk Account portal.
If using a separate job server, ensure the ADSKFLEX_LICENSE_FILE environment variable is set to 2080@YOUR_SERVER_IP. Solutions for Linux Installations
Linux users often face this error due to missing configuration packages or incorrect path variables.
Troubleshooting Autodesk Moldflow Error 99998: Solving the "License Not Available" Issue
Few things are more frustrating than setting up a complex simulation only to be met with ** ERROR 99998 ** in your analysis log. This error typically states that a "Required license for AMI_STANDARD (or Premium/Ultimate) is not available".
While it might look like a solver failure, Error 99998 is almost always a licensing communication issue. Here is how to diagnose and fix it. Why is this happening?
The error occurs when the Moldflow Insight solver cannot reach or acquire a license from the server. Common causes include:
Missing Solver License: You may have a license for the UI (Synergy) but not for the solver (Insight).
Incorrect Configuration: The software is looking at the wrong server or using the wrong license level (Standard vs. Ultimate).
Network Timeouts: The request to the license server is taking too long and timing out.
Firewall Blocks: Security software is preventing the solver from communicating with the Network License Manager (LMTools). Step-by-Step Fixes 1. Run the License Configuration Tool
This is the most common fix for Moldflow 2023 and newer versions. Close all Moldflow instances.
Open the License Configuration tool (search "License Configuration 202x" in your Windows Start menu or find mlc.exe in the bin folder).
Ensure the License Mode is set to "Network" and the License Level (Standard, Premium, or Ultimate) matches your subscription. Verify the License Server hostname is correct. 2. Check Server Status in LMTools
If you manage your own license server, verify the licenses are actually active. Open LMTools on your server.
Go to the Server Status tab and click Perform Status Inquiry.
Look for feature codes like MFIB, MFIP, or MFIA (representing different Insight levels). If they aren't listed, your license file may be expired or missing the solver component. 3. Increase the FLEXLM Timeout
If your server is on a slow network or VPN, the solver might give up too early. Go to Windows System Environment Variables. Create a new System Variable named FLEXLM_TIMEOUT. Primary Causes of “Error 99998 Full” You cannot
Set the value to 10000000 (10 million, which equals 10 seconds). 4. Clear Rogue Processes
Sometimes a previous crashed analysis "hangs onto" a license.
Open Task Manager and look for processes like flow.exe, cool.exe, or mhb3d.exe.
End these tasks manually to release the license back to the pool. When to Reinstall?
If you've verified the server is fine but the error persists, it may be an installation mismatch. Reinstalling the Autodesk Moldflow Insight License Configuration package specifically often resolves stubborn registry issues without requiring a full software reinstall.
For more detailed technical documentation, visit the official Autodesk Support page for Error 99998.
The most frequent reason for this error is that the Moldflow Insight solver (e.g., AMI_STANDARD, PREMIUM, or ULTIMATE) cannot be checked out. This happens because:
All licenses are in use: Every available seat is currently occupied by other active simulations.
Expired or Missing License: The subscription has ended or the license file lacks the specific solver component (Insight).
Configuration Mismatch: The software is set to the wrong license level (e.g., trying to use "Ultimate" features with a "Premium" license). Troubleshooting Steps Check License Availability: Open the LMTools utility on your license server.
Go to the Server Status tab and click Perform Status Inquiry.
Verify if MFIB, MFIP, or MFIA (Insight licenses) are listed and if any are free. Verify Local Configuration (Moldflow 2021+):
Close Synergy. Open the License Configuration tool from the Windows Start menu.
Ensure the License Level (Standard/Premium/Ultimate) matches your subscription. Confirm the License Server Hostname is correct. Address Potential "Full" Disk Issues:
If the error occurs during installation or model export, verify that the drive containing your temporary folder (%TEMP%) has at least several gigabytes of free space.
For simulation runs, ensure the project drive is not out of capacity, as Moldflow generates massive temporary files during analysis. Advanced Fixes
Increase Timeout: If the server is slow to respond, create a system environment variable named FLEXLM_TIMEOUT with a value of 10000000 (10 million).
Kill Rogue Processes: If you believe a license is "stuck," use Task Manager to end any orphaned flow.exe, cool.exe, or warp.exe processes.
Are you seeing this error immediately upon starting a run, or does it happen after the simulation has been processing for a while?
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.
You cannot solve a problem you do not understand. Here are the five root causes that lead to this error.
Here are the step-by-step fixes, ordered from most likely to least likely to work.
Because 99998 is a generic crash code, there is rarely a single "fix." However, the error almost always stems from one of three categories:
| Cause | Likelihood | Fix Priority | |--------|------------|----------------| | Temp drive full | High | 1 | | Too many output steps | High | 2 | | 32-bit solver mode | Medium | 3 | | Antivirus blocking | Medium | 4 | | Corrupt study | Low | 5 | | Path length limit | Low | 6 |