Autodesk Moldflow Error | 99998 Exclusive

Error 99998 in Autodesk Moldflow (Synergy, Insight, or Adviser) is a high-level licensing error indicating that the software cannot obtain a required license

to run a simulation. While the error message often mentions a specific license tier—such as AMI_STANDARD AMI_PREMIUM AMI_ULTIMATE

—the underlying issue is usually a failure in communication between the Moldflow solver and the license server. Primary Causes Missing License File Components

: The license file might contain a license for Synergy (the user interface) but lacks the required entry for Insight (the solver). Incorrect Product Key

: Entering the wrong product key during installation can cause this error, as Synergy and Insight require distinct keys that change with every version. License Configuration Errors

: The software might not be pointing to the correct license server or port, or the license level (Standard vs. Ultimate) might be misconfigured. Server Communication Issues

: Firewalls, anti-virus software, or VPN restrictions can block the license request from reaching the server. Recommended Troubleshooting Steps Verify Server Status with LMTools on the license server. Navigate to the Server Status tab and click Perform Status Inquiry Confirm that the solver licenses (e.g., ) are listed and not expired. Update License Configuration (Windows)

Start Menu > Autodesk Moldflow Insight/Adviser 202x > License Configuration 202x Ensure the License Mode Server Hostname are correct. and restart the software. Check Environment Variables Ensure the ADSKFLEX_LICENSE_FILE variable is set correctly in Windows. If the server is on a slow network, consider creating a FLEXLM_TIMEOUT variable to prevent the license request from timing out. Reinstall Licensing Components

If the issue persists in Moldflow 2021 or newer, try uninstalling and then reinstalling the Autodesk Moldflow Insight License Configuration package from the Windows Control Panel. For further assistance, you can consult the official Autodesk Support Technical Article on Error 99998. solver installation instead?

Comprehensive Technical Analysis: Autodesk Moldflow Error 99998

Error 99998 is a critical licensing failure in Autodesk Moldflow Insight and Adviser that occurs when the software cannot verify or check out the required solver license to initiate an analysis. This error typically manifests in the analysis log as: "Required license for AMI_STANDARD, AMI_PREMIUM or AMI_ULTIMATE is not available, or all licenses are currently in use". Root Causes of Error 99998

The occurrence of Error 99998 can be attributed to several architectural and environmental factors within the Autodesk licensing ecosystem:

License Availability & Expiration: The license may have expired, or the specific solver seat (e.g., MFIB, MFIP, or MFIA) is missing from the license file.

Concurrency Limits: All available license seats are currently occupied by other users or active parallel solve jobs. Configuration Mismatches:

Incorrect license level selection (e.g., attempting an "Ultimate" analysis on a "Premium" license).

The software is pointing to an incorrect server name or IP address. Systemic Failures: Outdated Network License Manager (LMTools) versions.

Lack of communication between the client and the Simulation Compute Manager (SCM). Firewalls or anti-virus software blocking license requests.

Platform-Specific Issues: On Linux, common causes include missing license configuration packages or incorrect environment variables like ADSK_SERVICE_ADDRESS. Diagnostic Procedures

To identify the exact nature of the failure, administrators should follow a structured diagnostic workflow:

Server Status Inquiry: Use LMTools on the license server, navigate to the Server Status tab, and click Perform Status Inquiry. Verify that the Insight solver licenses are listed and not expired.

Rogue Process Check: On the local machine, check the Task Manager for "rogue" solver tasks such as flow.exe, cool.exe, or warp.exe. These can sometimes hang and continue to hold a license seat. autodesk moldflow error 99998 exclusive

Communication Logs: Check the license service log file for checkout errors or "denied" messages, which indicate whether the request is reaching the server but being rejected. Resolutions and Best Practices For Windows Users

Run License Configuration: Access the License Configuration tool (mlc.exe) via the Windows Start Menu under the Moldflow Insight folder. Ensure the License Mode, Level, and Server information are correct.

Reinstall License Configuration: If configurations persist in failing, uninstall the "Autodesk Moldflow Insight License Configuration" from the Control Panel and reinstall it using the original installer.

Timeout Variables: If the server takes too long to respond, create a FLEXLM_TIMEOUT environment variable to increase the wait time. For Linux Users

It was 2:47 AM, and the only light in Peter’s office came from the angry red glow of Autodesk Moldflow’s error console. Error 99998: Exclusive access required. Write lock failed. He’d been here before. Everyone had. But tonight, the error felt personal.

Three weeks of optimization on the HDP-670 battery tray—a complex glass-filled nylon part with variable wall thicknesses and a torture chamber of cooling channels—had led to this. Not a mesh failure. Not a material mismatch. A digital “get out.”

Peter tried the basics: restart the solver, delete the .lck lock file, reboot the workstation. Error 99998 laughed back. He checked the network drive. No one else was in the project folder. IT confirmed no shadow processes. Yet Moldflow insisted: Another user has write access.

Desperate, he opened the log file manually—a buried .txt in the temp directory. And there, timestamped 11:13 PM, was a session ID. Not his. Not his coworker Lisa’s. It belonged to a deactivated employee named Marcus Chen, who’d left the company 14 months ago.

Peter called Lisa on speaker. “Remember Marcus?”

“The moldflow guru? Yeah. Why?”

“His ghost just locked my simulation.”

Lisa groaned. “Check the project archive folder on the server. Marcus had a weird habit—he used to map his temp files to a hidden subfolder named ‘exclusive_hold’ to force serial runs when the HPC cluster was overloaded. HR made him delete it before he left. But maybe…”

Peter navigated to \\corpfs\projects\moldflow\archive\.system. Buried in a folder with a null character name (visible only via PowerShell) was a 14-month-old lock file—still active. The server’s file system had never cleared the lease because the process that created it had terminated abnormally. Every new Moldflow session since then had politely avoided that file. But Peter’s current job, with its massive 3D mesh, had triggered a deep file system check—and found the ancient lock.

He nuked the folder with rm -force -recurse. The error 99998 vanished. The solver kicked in with a satisfying whir.

By 3:30 AM, the fill analysis ran. By 4 AM, Peter discovered a weld line right across a structural rib—a problem he could now fix. And by 5 AM, he’d written a short script that would scan for orphaned exclusive locks before every large run.

He leaned back, coffee cold. “99998 exclusive,” he muttered. “Not a bug. A ghost story.”

He saved the script as exorcism_v1.ps1.

In Autodesk Moldflow, Error 99998 typically indicates a license failure where the required "feature" (the specific product level or solver) cannot be found or accessed by the software.

Common features that trigger this error if they are missing or misconfigured in your license file include: AMI_STANDARD (Moldflow Insight Standard) AMI_PREMIUM (Moldflow Insight Premium) AMI_ULTIMATE (Moldflow Insight Ultimate) AMA_ULTIMATE (Moldflow Adviser Ultimate) Common Causes & Solutions Expired or Missing License on your license server, go to the Server Status tab, and click Perform Status Inquiry . Look for features like to ensure they are active and not expired. Mismatched License Levels

: If you installed the Ultimate update but only have a Premium license, the software will fail. Ensure your License Configuration Error 99998 in Autodesk Moldflow (Synergy, Insight, or

(found in the Windows Start menu under Autodesk Moldflow) is set to the correct license level. All Licenses in Use : Check if "rogue" solver tasks ( ) are running in your Task Manager . Ending these processes can release stuck licenses. Incorrect Product Key

: For older versions (2019 and below), ensuring the correct product key was used during installation is critical, as Synergy (the UI) and Insight (the solver) require different keys.

For more detailed troubleshooting, you can check the official Autodesk Support Page for Error 99998 Are you seeing a specific feature name

(like AMI_ULTIMATE) in your error log, or would you like help checking your license server status

Autodesk Moldflow Error 99998 typically indicates that the required solver license (e.g., AMI_STANDARD, AMI_PREMIUM, or AMI_ULTIMATE) is not available or all licenses are currently in use.

If your specific error message includes "exclusive," it generally means a background process is holding a lock on the license or a previous analysis didn't close properly, preventing a new one from starting. Recommended Troubleshooting Steps Check for "Rogue" Processes

: Sometimes a previous analysis hangs and keeps the license occupied. Task Manager and look for processes like

End these tasks to release the "exclusive" hold on the license. Verify License Configuration

: Ensure your software is pointing to the correct license server and level. Windows Start Autodesk Moldflow Insight 202x License Configuration Confirm the License Level

(Standard, Premium, or Ultimate) matches your actual subscription. Ensure the Server Hostname is correct. Update the Licensing Service

: Outdated licensing components often cause communication timeouts. Uninstall and reinstall the Autodesk Desktop Licensing Service (ADLS) to ensure it’s the latest version. Increase Timeout Limits

: If you are on a slow network or VPN, the request might time out before it can grab the license. System Environment Variable FLEXLM_TIMEOUT with a value of (10 million). Check License Server Status on your license server to perform a "Status Inquiry".

Confirm that the Insight solver licenses (MFIB, MFIP, or MFIA) are listed and not expired. Are you running this analysis on a local workstation network/Linux solver

12 Solutions to Fix AutoCAD License Manager Not Functioning - ZWSOFT

Autodesk Moldflow Error 99998 typically indicates that the required license for the solver (Insight) or user interface (Synergy) is either unavailable, currently in use, or not properly configured. Core Meaning

This error occurs when the software cannot verify a valid license to run the specific analysis you have requested. It may appear as:

In Autodesk Moldflow, Error 99998 typically indicates that the software is unable to obtain a license for the solver (Insight), either because the license is unavailable, all seats are in use, or the connection to the license server has failed. Common Causes

License Availability: All available licenses are currently checked out by other users or "zombie" processes (e.g., flow.exe, cool.exe) that didn't close properly.

Server Connection: The client machine cannot communicate with the license server due to firewall blocks, incorrect server names, or IP address resolution issues.

Configuration Errors: The "License Configuration" tool has not been run or points to the wrong server, or the wrong product key was used during installation. Fix 1: Manual Deletion of Lock Files (The Classic Solution)

Version Mismatch: Using a product key for a different version (e.g., trying to run 2024 with a 2023 key).

System Clock: A significant time/date difference between the client machine and the license server. Recommended Solutions 1. Check License Status

Use the License Manager Tool (LMTools) on the server to verify license availability:

Navigate to the Server Status tab and click Perform Status Inquiry.

Look for the Insight solver features (e.g., MFIB, MFIP, or MFIA) to see if any are available.

If all licenses are shown as "in use," you must wait for a seat to be released or end "rogue" processes like flow.exe in the Task Manager. 2. Run the License Configuration Utility

For Windows users, ensure the solver is pointed to the correct server: Close all instances of Moldflow Synergy.

Go to the Start Menu > Autodesk Moldflow Insight 202X > License Configuration 202X.

Select the correct Network License type and enter the hostname of your license server. Click Apply and OK before restarting the analysis. 3. Increase Retrieval Timeout

If your network is slow, the request might time out before the server can grant it. You can increase this by adding an environment variable: Variable Name: FLEXLM_TIMEOUT

Variable Value: 10000000 (10 million, which equals 10 seconds). 4. Verify Firewall Settings

Ensure the necessary ports are open for both inbound and outbound communication on both the client and server. The default ports for Autodesk licensing are usually 27000-27009 and 2080. 5. Registry Cleanup (Advanced)

If the software is pointing to an old or incorrect server, you may need to clear the registry:

Check HKEY_CURRENT_USER\Software\FLEXlm License Manager\ADSKFLEX_LICENSE_FILE.

Ensure only the current, correct license server address is listed.

For more detailed technical steps or specific product keys, you can refer to the Autodesk Support article on Error 99998.

Are you using a standalone or network license, and which version of Moldflow are you currently running?

Fix 1: Manual Deletion of Lock Files (The Classic Solution)

1. Navigate to your project folder: \\Server\Share\Moldflow_Projects\YourProject\
2. Close Moldflow entirely.
3. Enable "View Hidden Items" in File Explorer.
4. Look for files with these extensions:
   • *.lck
   • *.lock
   • *.~lock.*
   • A hidden folder named __lock__
5. Delete all lock files. Do not delete study files (.sdy, .mfj, .mfr).
6. Also check the subfolder for the specific study: YourProject\Study_001\ for any .lck files.
7. Reopen Moldflow and access the study.

Note: On some network systems, lock files are stored in a central \Locks directory. Consult your IT admin.

Part 5: When to Contact Autodesk Support

If you’ve completed all steps above and still see Error 99998 exclusive, gather the following for Autodesk Technical Support:

1. License log file (C:\ProgramData\FLEXnet\debug.log)
2. Moldflow job log file (the .mfl or .out file from your analysis)
3. AdskLicensing log (C:\ProgramData\Autodesk\AdskLicensingService\AdskLicensingService.log)
4. Screenshot of the error with timestamp.
5. Output of lmutil lmdiag -c [license_file] –n (this diagnoses specific feature conflicts).

Open a support case via Autodesk Account → Support → Cases, and attach these files. Mention "Error 99998 exclusive – troubleshooting steps 1-7 complete" to fast-track the conversation.

Fix 7: Command Line Force Unlock (Advanced)

For network administrators, use the openfiles command to list and disconnect stale locks:

openfiles /query /s ServerName /u Domain\Admin
openfiles /disconnect /s ServerName /id 12345

Then have the Moldflow user reconnect.