Open the (or Autodesk Synergy) queue and delete stalled jobs.
Running Moldflow studies from a mapped network drive (e.g., Z:\Projects\ ) is risky. A brief network drop or latency spike during the initial solver handshake will cause the solver to abort with Error 99998.
Avoid launching multiple high-resource simulations simultaneously on local machines with less than 64 GB of RAM.
Select your fastest drive (preferably an NVMe SSD) and choose . autodesk moldflow error 99998
Moldflow requires 5–10x the size of your study file in free space on the %TEMP% drive. If your C: drive is nearly full, the solver cannot expand result arrays, leading to a write failure mapped to error 99998.
Open the analysis text log before looking at the model. Scroll to the very bottom of the log. Look at the last successfully completed iteration. The lines immediately preceding the "Error 99998" message often indicate if the crash happened during the filling, packing, or cooling phase, narrowing down your search. Step 2: Repair the Mesh
Open Windows File Explorer and navigate to your temporary directory (typically C:\Users\ \AppData\Local\Temp ). Open the (or Autodesk Synergy) queue and delete stalled jobs
Error 99998 is a common but solvable issue in Autodesk Moldflow. While its root cause is a missing or unavailable license, the specific trigger can range from a simple typo to a complex server misconfiguration.
Understanding the root causes of this error allows you to resolve it efficiently and return to optimizing your part designs. What is Autodesk Moldflow Error 99998?
| Check | Action | Expected Result | | :--- | :--- | :--- | | | Ask network admin for server hostname/IP | ⬜ Correct server address | | Check network connectivity | Run ping server_hostname from client PC | ⬜ Successful replies | | Verify license availability | Run command (Linux) or use LMTOOLS (Windows) | ⬜ Free license seats exist | | Inspect analysis log | Locate .mlp file in project directory | ⬜ Full error context identified | If your C: drive is nearly full, the
Remove small fillets, logos, or tiny chamfers that create dense, unnecessary clusters of elements.
If the simple model runs successfully, your software installation is fine. The issue is strictly tied to the complex geometry or mesh of your original model.
For Linux users, simply having the license server running isn't enough; you must specifically install the Moldflow Insight License Configuration package
Approximately percentage-wise did it crash? What version of Moldflow are you currently using? Share public link
Dedicate a high-speed solely for Moldflow project directories and solver scratch files.