While running a high-stakes simulation in Autodesk Moldflow, encountering the cryptic "Error 99998" can be a major roadblock. This error is a generic "unexpected termination" signal, meaning the solver crashed before completing the analysis. Because it acts as a catch-all for various internal failures, finding the "best" fix requires a systematic approach to troubleshooting.
- The Scripted Response: Opening a ticket for 99998 usually yields a scripted response: "Update your graphics drivers" or "Repair installation."
B. Hardware and Resource Exhaustion
Moldflow is a memory-intensive application. Error 99998 often appears when the solver requests memory that the system cannot allocate or access.
- Switch solver type (e.g., implicit ↔ explicit) or reduce time-step size.
- Loosen convergence tolerances slightly to test stability, then tighten incrementally.
- Enable/adjust stabilization options if present.
- Switch to a default material: Change your resin to a generic ABS (e.g., “Generic ABS 2024” from Autodesk library). Rerun.
- If the error clears: Your custom material has bad viscosity coefficients. Request a corrected UDB file from your supplier.
