/Users/ /Library/Application Support/MathWorks/MATLAB/R20XXx_licenses/ or /Applications/MATLAB_R20XXx.app/licenses/
While the specific codes are unique to each user, a standard license.lic file generally includes the following components:
A license.lic file generated for one release (e.g., R2010b) will not work for a newer release (e.g., R2025a). Always generate a new license file for your specific MATLAB version.
file instead, which instructs MATLAB to authenticate online via your MathWorks account every time you start the program. 2. Common File Locations license.lic matlab
Show you (Host ID) to make sure it matches your license.
A license.lic file is a plain text file used by to manage software licensing. It typically contains encrypted server information, package details, and expiration dates required for the software to run. Typical Content Structure
Note that R2023a in these paths should be replaced with your specific MATLAB release number, such as R2024b or R2025a . For an or Designated Computer license
A standalone license.lic would have many INCREMENT lines listing each toolbox.
Log into the MathWorks License Center online, deactivate the old machine host ID, and perform a new activation using the current machine’s correct Host ID. Download the updated license.lic and replace the old one.
If you have ever installed MATLAB or managed a network of MATLAB users, you have likely encountered the license.lic file. This plain text file is the backbone of MathWorks’ licensing system. Without it, MATLAB cannot verify that you have the right to use the software, leading to immediate startup crashes or error messages. the license.lic file is a complete
: If you are an administrator, you can download a pre-formatted license.lic directly from the MathWorks License Center.
For an or Designated Computer license, the license.lic file is a complete, standalone license. It is tied to a specific computer, identified by its Host ID (typically the MAC address of a network adapter), and often to a specific user, identified by the computer's login name. This file lives on the local machine and allows a single, designated user to run MATLAB on that particular computer without needing a constant connection to a central server.
: If MATLAB says it cannot read the license file, ensure the user has "Read" permissions for the \licenses folder. On Linux/macOS, you may need to use chmod 444 license.lic . Frequently Asked Questions