Autodesk Moldflow Error 99998 Exclusive Jun 2026

: If the error arises due to a network timeout (LMTools not replying), add the following system variables to both the Synergy and Insight machines via System Properties > Environment Variables:

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—. 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.

By following this guide and taking a systematic approach to troubleshooting, you'll be well on your way to resolving Error 99998 and getting back to simulating and optimizing your injection molding processes with Autodesk Moldflow.

In Moldflow Adviser, the error references AMA_PREMIUM or AMA_ULTIMATE instead. The error can occur immediately when starting an analysis, or it can appear mid-analysis (for instance, after the flow analysis completes but before the warpage analysis begins). The issue stems from a failure in the licensing handshake between the Moldflow Insight solvers and the Autodesk Licensing Service (ALS) or FlexLM license server.

: Using a product key for the wrong version year (e.g., trying to run Moldflow 2023 with a 2019 license). License Level Discrepancy autodesk moldflow error 99998 exclusive

Always check the Autodesk Account portal for updated license files before a new release cycle.

Confirm that the Insight solver features (e.g., MFIB , MFIP , or MFIA ) are listed and not expired.

systemctl status adsklicensing

He leaned back, coffee cold. “99998 exclusive,” he muttered. “Not a bug. A ghost story.” : If the error arises due to a

Before fixing Error 99998, you must understand how Moldflow manages file access. Moldflow does not simply read/write to a single .sdy file. Instead, it uses a . Each project contains multiple studies, and each study contains dozens of files:

: Moldflow cannot resolve the license server's alphanumeric network name to its physical IP address.

An improper product key was entered during installation.

If urgent, restarting the FLEXlm service on the license server will break the exclusive lock. Proactive Best Practices Every new Moldflow session since then had politely

: The network lag is too high, causing the license request to expire. Step-by-Step Solutions for Windows Environments 1. Run the Moldflow License Configuration Tool

"But by who?" Elena typed frantically, her fingers flying over the mechanical keyboard. lmutil lmstat -a -c @license_server

In simple terms, The word "Exclusive" means the solver is trying to access a file, folder, or memory block that is currently "checked out" by another process.

The most common cause is a previous analysis that didn't clean up after itself. You ran a study yesterday, it crashed, you closed the window, but a background process ( mpi.exe or runstudy.exe ) is still lurking in the shadows of your Windows Task Manager. It is holding a "lock" on the results file. When you try to run a new study, the Synergy solver sees that lock and panics, throwing the 99998.

: Running simulations directly on a network drive can lead to "exclusive access" errors if the connection blips. 2. Lack of Disk Space

All available seats are currently being used by other users.