There is a myth that you can edit the license.lic file to extend expiration dates or add toolboxes. The file contains a cryptographic signature. Changing any character invalidates the signature, and MATLAB will reject the file.
License server machine is down or not responding. license.lic matlab
How do I force MATLAB to use a specific license file? - MathWorks There is a myth that you can edit the license
: The name or IP address of the license server. license.lic matlab