While sounds like a fatal crash, it is almost always a file management or process conflict issue. By clearing your background tasks and ensuring your temporary directories are local and clean, you can resolve the "exclusive lock" and get back to optimizing your parts.
Don't try to run an analysis on a project file that is currently open in another instance of Moldflow. autodesk moldflow error 99998 exclusive
The most common cause is a hung process. Even if Moldflow looks closed, the solver might still be running in the background. Open (Ctrl+Shift+Esc). While sounds like a fatal crash, it is
Ensure you are running the latest version of the Simulation Job Manager, as Autodesk frequently releases patches for these communication errors. The most common cause is a hung process
Are you running your simulations on a or using a remote server/cluster setup?
This error typically halts your analysis before it even begins, often appearing in the analysis log as: ** ERROR 99998 ** Analysis failed due to an exclusive lock or licensing conflict.