For professionals, researchers, and students using MATLAB, one of the most common yet misunderstood components of installation and maintenance is the license.lic file. This small plain-text file is the key that unlocks the powerful computational capabilities of MATLAB and its toolboxes. A misconfigured license.lic is a leading cause of startup errors, "license checkout failed" messages, and the inability to use specific toolboxes.
When troubleshooting or manually updating a license, finding where MATLAB stores this file is the first step. The default directory varies by operating system. C:\Program Files\MATLAB\R202X_b\licenses\
: For most individual or standalone licenses, the file is locked to your specific (MAC address) and
License Manager Error -15 (Cannot Connect to License Server) license.lic matlab
/Users/ /Library/Application Support/MathWorks/MATLAB/R20XXx_licenses/
Click on your profile icon and select License Center from the deployment tools.
Administrators use a central license.lic file on a server (often managed by FlexNet) to "float" seats to different users across a campus or office. Troubleshooting "License Checkout Failed" When troubleshooting or manually updating a license, finding
MATLAB uses a sophisticated search path to locate license files. Here are the default locations for each license type, categorized by operating system.
The location of your license file depends on your Operating System and license type: Individual License Location Network License Location %AppData%\MathWorks\MATLAB\R20XXy C:\Program Files\MATLAB\R20XXy\licenses ~/.matlab/R20XXy Inside the MATLAB app package ( ~/.matlab/R20XXy $MATLAB/licenses 3. Manual Management & Commands
The Complete Guide to MATLAB license.lic Files: Activation, Troubleshooting, and Management Administrators use a central license
If you are on a university or corporate annual subscription, your administrator must renew the contract. Once renewed, open the MATLAB application and run the Activation Wizard ( activate_matlab.exe on Windows) to automatically fetch the updated license.lic with the new expiration date. 4. MATLAB Crashes on Splash Screen with No Error
If you open a license.lic file in a text editor like Notepad or TextEdit, you will see a structured format. Modifying this text manually (other than specific server edits) will corrupt the cryptographic signature and invalidate the license. Network License Example