triggers when Moldflow requests exclusive access but the operating system or network denies it. The study is either already open elsewhere, or a stale lock file remains from a previous crash.
Sometimes, the error appears silently in the solver log when launching an analysis:
Click , clear the confirmation dialog box, and relaunch the simulation. Step 2: Establish the FLEXLM_TIMEOUT System Variable
Moldflow requires vast amounts of storage space to write scratch files during a matrix inversion. If the default Windows TEMP directory has strict permission policies or is running low on space, an exclusive access crash occurs. autodesk moldflow error 99998 exclusive
If the error is caused by an exclusive licensing seat conflict, resetting your local login state will force Autodesk to re-allocate a clean token. Close all Autodesk applications.
The error 99998 exclusive in Autodesk Moldflow typically manifests as a pop-up message or an entry in the software's log files. The message itself does not offer much insight into the cause of the problem, making it challenging to diagnose and fix. This error can occur at any point during the use of the software, whether you are setting up a new project, running analyses, or reviewing results.
You may have installed a version that does not match the license file on the server (e.g., trying to use an Ultimate license with a Premium installation). triggers when Moldflow requests exclusive access but the
This error typically presents itself in the analysis log with a message indicating an unexpected termination or an inability to access specific execution threads. It is heavily tied to license check-out failures, software conflicts, and credential desynchronization.
When you kick off a filling, packing, or warpage calculation, the assigns the study to an active solver engine (like flow.exe , cool.exe , or warp.exe ). Before executing a single math mesh layer, that solver must pull an exclusive token or license seat.
The error message is blunt:
When you encounter this error, it signifies that the solver—Moldflow Insight—cannot secure the necessary rights to start the analysis. This often happens because another user has an hold on a license, or the licensing service is experiencing a communication failure. Understanding the Root Causes of 99998
: Change the License Mode to Network License and map out your tier levels accurately (Standard, Premium, or Ultimate).
Oftentimes, a prior simulation that crashed or was abruptly canceled leaves an orphan executable operating silently in the background. This locks up your pool of active floating licenses. Close all Autodesk applications