This error typically appears , after the pre-processing steps—such as mesh generation and material selection—have been completed successfully.

. It typically occurs when the "Synergy" user interface is licensed correctly, but the "Insight" solver is either unlicensed, misconfigured, or unreachable. Common Causes Expired or Missing License

If you generate a Dual-Domain mesh (midplane equivalent for thin parts) and then convert it to a 3D tet mesh, the conversion algorithm can sometimes leave "zero-volume" elements or elements with negative Jacobians. Most mesh statistics look fine, but the solver chokes on the first iteration of the filling phase. Result: Error 99998.

: The Insight solver license may have expired or is not present in the license file.

Network security software can block Moldflow’s ability to communicate with the license server.