This is a sneaky one. If you have Windows File Explorer open and you have clicked on a .sdy or .mfr file, Windows locks that file to generate a thumbnail preview. Moldflow cannot get "exclusive" access because Windows is reading the header.

is not a death sentence for your simulation; it is a cry for resource management. In 95% of cases, the issue is a simple license conflict caused by a stale process or a permission hiccup. By systematically working through process termination, cache clearing, antivirus exclusions, and administrator rights, you can return to analyzing gate locations, weld lines, and air traps within minutes.

An improper product key was entered during installation.

: Check Windows Task Manager for hung solver tasks such as flow.exe , cool.exe , warp.exe , or mhb3d.exe . Ending these processes can release "stuck" licenses.

Over heavily loaded corporate Intranets, VPN connections, or cross-regional networks, Moldflow's solver can stop waiting for a license ticket response too quickly, resulting in an immediate 99998 abort. Adding an explicit global timeout variable fixes this network lag.

The license file includes seats for Synergy (the user interface) but lacks the corresponding seats for Insight (the solver).

: The client workstation cannot resolve the absolute hostnames of the license servers into their corresponding IP addresses.

The typically indicates that the solver cannot access the required license (such as AMI_STANDARD , AMI_PREMIUM , or AMI_ULTIMATE ). This often occurs when the license is missing, all seats are occupied, or the client machine cannot communicate with the license server. Common Causes & Solutions

In simple terms, The word "Exclusive" means the solver is trying to access a file, folder, or memory block that is currently "checked out" by another process.