Ensure that your Autodesk license is active and properly configured. Licensing issues can sometimes cause unexpected errors.

Most instances of Error 99998 stem from three primary categories: mesh quality, hardware limitations, or software/license conflicts. 1. Mesh Defects and Geometric Issues

After installing an update, if (the solver) and Moldflow Synergy (the user interface) are not updated to the exact same version (e.g., both on Update 2), the software cannot communicate, resulting in Error 99998.

Run the tool to check for connectivity errors, free edges, and overlapping elements.