SIgned up for trial license. Followed install instructions (Debian 11). run "matlab", get "Licensing error: -9,57"

see above

Answer 1

[Govind KM]

Hi Michael,

From what I understand, you are getting a licensing error when trying to run MATLAB with a trial license. The "Licensing error: -9,57" is usually caused by a username mismatch, i.e. the OS username of the user launching MATLAB not matching with the username used during activation. This often occurs when an administrator activates MATLAB for a user.

For more details and resolution steps, you can refer to the following article:

https://www.mathworks.com/matlabcentral/answers/99067-why-do-i-receive-license-manager-error-9

Hope this is helpful.