Antivirus or firewall software blocking the solver executable.
If the error persists after these steps, it is likely a specific related to a unique combination of material data and process settings. To help you get back to your simulation, could you tell me: Which version of Moldflow (2021, 2023, 2024) are you using? autodesk moldflow error 99998
Excessively high element counts or extreme mesh distortions. autodesk moldflow error 99998