Autodesk Moldflow Error 99998 [top] (2025)

Go to the tab and click Perform Status Inquiry .

Placing an injection cone on an unmeshed node or an isolated element.

Restart your computer and try running a simple test simulation. Step 2: Validate and Repair the Mesh

If you are running out of memory, limit the number of CPU cores allocated to the solver in the Simulation Compute Manager settings. This reduces the parallel memory overhead. Step 4: Simplify the Process Settings autodesk moldflow error 99998

Navigate to your temporary folder directory (typically configured in your Moldflow options or found via %TEMP% in Windows Explorer) and delete the temporary files associated with the failed analysis.

Error 99998 is a fatal solver error. It indicates that the simulation engine stopped working abruptly before completing the analysis. Unlike specific error codes that point directly to a missing boundary condition or a venting issue, 99998 means the solver encountered a problem it could not gracefully recover from or categorize. Primary Causes of Error 99998

Add flow.exe , cool.exe , and warp.exe to your Antivirus/Firewall exceptions. Go to the tab and click Perform Status Inquiry

If your connection is slow (e.g., using a VPN), add a system environment variable named FLEXLM_TIMEOUT with a value of 10000000 (10 million) to give the server more time to respond.

Error 99998 is a broad execution error. It means the simulation analysis engine (the solver) terminated prematurely before completing its calculations. Because it is a generic crash reporter, the error itself does not point to a single specific problem. Instead, it signals that the solver encountered an instability it could not recover from. Common Causes of Error 99998

Verify that the server name and license file path are correct. Step 2: Validate and Repair the Mesh If

Elements that are too stretched or distorted cause mathematical instability in the solver.

This is not a standard meshing error (like 10061) or a material data error. Error 99998 indicates that Moldflow cannot communicate with your hard drive, network location, or temporary directory.

If your model is highly detailed, you must give the solver enough computational headroom.

When Moldflow exhausts physical RAM, it switches to the Windows paging file. If this file is too small or restricted, the solver crashes instantly with Error 99998.

Adjust solver controls