Autodesk Moldflow Error 99998 Best <ESSENTIAL × SERIES>

But what is the best way to fix Error 99998? This article provides the definitive, step-by-step guide to diagnosing, resolving, and preventing this issue permanently. Error 99998 is a generic numerical failure code. Unlike Error 1005 (mesh issues) or Error 3001 (material data), Error 99998 indicates that the solver encountered a mathematical operation it could not complete—typically during the filling, packing, or warpage stages.

If you are a plastics engineer or mold designer, few things are as frustrating as a simulation crashing right before a critical deadline. Among the pantheon of Autodesk Moldflow solver errors, Error 99998 is one of the most notorious. Often accompanied by a vague message like “Solver terminated due to numerical problems” or “Unexpected internal error,” this code brings your analysis to a screeching halt. autodesk moldflow error 99998 best