the project to a local C: drive with a short folder name. Disable antivirus temporarily to rule out a software block.
Add flow.exe , cool.exe , and warp.exe to your Antivirus/Firewall exceptions.
A "bad" mesh is the most common reason for a solver to give up mid-calculation. autodesk moldflow error 99998
Ensure your GPU drivers are current, as Moldflow uses the GPU for certain calculations. Phase 2: Software and Connectivity
Remove small fillets, logos, or tiny chamfers that create dense, unnecessary clusters of elements. the project to a local C: drive with a short folder name
the mesh for intersections or "zero-volume" elements.
Save your project in a simple directory like C:\Simulations\ . Long paths (over 256 characters) often trigger 99998. A "bad" mesh is the most common reason
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?