| Error Code | Meaning | Resolution | | :--- | :--- | :--- | | | Cannot connect to license server. | The License Manager service is not running. Start it via the OS services list. | | -9 | Host ID mismatch. | The MAC address used to generate the license does not match the active network adapter (common on VPNs or laptops with multiple adapters). | | -10 | Feature not found. | The trial license does not include the specific physics module (e.g., trying to use the Battery Module when the trial only includes the base COMSOL Multiphysics). | | -33 | License expired. | The trial duration has ended. The file must be removed or replaced with a commercial license. |
COMSOL does not provide "trial source code." Instead, it provides a (typically 15–30 days). When people search for a "trial code," they often mean a workaround or a license key — but officially, COMSOL uses an LMCOMSOL license file or a trial-specific .lic file. comsol trial code
Unlike simple serial keys used in consumer software, a COMSOL trial is a cryptographically signed text file (usually named license.dat or LMCOMSOL_######.dat ). This file binds the software usage to a specific piece of hardware or a specific user account for a limited duration (typically 2 to 4 weeks). | Error Code | Meaning | Resolution |
Based on this trial, we recommend:
The objectives of this trial were: