Delete files in your %TEMP% folder to ensure the solver has enough "scratch" space.
Check the Autodesk Desktop App for any pending hotfixes for your specific Moldflow version. 5. Advanced Troubleshooting (The "Clean Slate" Method)
Confirm that ports 20030 and 2080 are open for communication between the workstation and the server. 3. Inspect Geometry and Mesh Quality
A "bad" mesh can cause the solver equations to diverge, leading to an immediate crash.
Autodesk Moldflow Error 99998 is a generic "unexpected failure" message that typically indicates the solver has crashed due to memory limitations, licensing interruptions, or problematic geometry. Because it is a catch-all error, the "best" way to fix it involves a systematic process of elimination.
Export your study as a Universal Descriptive Model (.udm). New Project: Create a brand-new project folder.
Run the "Mesh Repair Wizard" to find overlapping elements or zero-area faces.
Restart the "Autodesk Simulation Job Manager" or "ADSKLicensing" service via services.msc .
Outdated components can lead to instability with newer Moldflow solvers.
Check Task Manager. If memory usage hits 90%+, the solver may trigger a 99998 crash.