Autodesk Moldflow Error 99998 Exclusive
In Autodesk Moldflow, Error 99998 typically indicates a license failure where the required "feature" (the specific product level or solver) cannot be found or accessed by the software.
Common features that trigger this error if they are missing or misconfigured in your license file include: AMI_STANDARD (Moldflow Insight Standard) AMI_PREMIUM (Moldflow Insight Premium) AMI_ULTIMATE (Moldflow Insight Ultimate) AMA_ULTIMATE (Moldflow Adviser Ultimate) Common Causes & Solutions Expired or Missing License on your license server, go to the Server Status tab, and click Perform Status Inquiry . Look for features like to ensure they are active and not expired. Mismatched License Levels
: If you installed the Ultimate update but only have a Premium license, the software will fail. Ensure your License Configuration
(found in the Windows Start menu under Autodesk Moldflow) is set to the correct license level. All Licenses in Use : Check if "rogue" solver tasks ( ) are running in your Task Manager . Ending these processes can release stuck licenses. Incorrect Product Key
: For older versions (2019 and below), ensuring the correct product key was used during installation is critical, as Synergy (the UI) and Insight (the solver) require different keys. autodesk moldflow error 99998 exclusive
For more detailed troubleshooting, you can check the official Autodesk Support Page for Error 99998 Are you seeing a specific feature name
(like AMI_ULTIMATE) in your error log, or would you like help checking your license server status
This post is written for a technical audience (molding engineers, analysts) but structured to be helpful for beginners troubleshooting the issue.
Title: The “Exclusive” Nightmare: Diagnosing and Fixing Autodesk Moldflow Error 99998 In Autodesk Moldflow, Error 99998 typically indicates a
Subtitle: Why your analysis won’t start and how to break the deadlock.
If you have spent any time running injection molding simulations in Autodesk Moldflow Insight (AMI) or Moldflow Advisor, you know that error codes are rarely straightforward. But few are as frustrating—or as poorly documented—as Error 99998: Exclusive.
You hit "Analyze." The job starts to queue. Then, seconds later, it fails. No flashy explanation, no red text in the log—just a cryptic reference to "exclusive" access. Let’s tear this error apart and get your simulation running again.
Part 5: Advanced Fixes for Persistent Error 99998 Exclusive
If quick fixes fail, systematically apply the following solutions. Application Options >
3. Corrupted Local License Cache
FLEXlm stores license borrow information in local cache files (e.g., debug.log, license.lic cache). If these files become corrupted—often after a forced shutdown or system crash—Moldflow may think it already has an exclusive license (false positive) and refuse to acquire a new one, or conversely, think it has no permission at all.
Part 4: Preventing Error 99998 in the Future
Once you’ve fixed the immediate error, adopt these best practices to avoid recurrence.
1. The Anti-Virus Quarantine (Most Common)
Your antivirus software (McAfee, Symantec, Windows Defender) sees Moldflow’s solver generating thousands of small temporary files and thinks it’s ransomware.
The Fix:
- Locate your Moldflow temp directory (usually
C:\Users\[YourName]\AppData\Local\Temp\or the path set in Tools > Application Options > File Paths). - Add this entire folder to your Antivirus Exclusion List.
- Also exclude
*.mfr,*.m3r, and*.op2extensions.