Why do I receive "Error -2002: The serial number you entered cannot be activated" after entering my Serial Number?

I get the following error message when trying to activate MATLAB Student:

ERROR: Error -2002: The serial number you entered cannot be activated. Contact MathWorks at 
http://www.mathworks.com/company/aboutus/contact_us/

Answer 1

[MathWorks Support Team]

You will receive this error when attempting to install MATLAB Student on multiple machines.

MATLAB Student allows you to activate MATLAB on up to two (2) computers.

If you are receiving this error and you have already activated MATLAB on two computers, please see the following article:

How do I transfer Student license to a new computer?

https://www.mathworks.com/matlabcentral/answers/142388-how-do-i-transfer-a-student-or-home-license-to-a-new-computer

You may also receive this error if your computer does not have a valid HostID. Please see the following article:

Why can't I activate MATLAB or start the network license manager in a newer Linux environment?

https://www.mathworks.com/matlabcentral/answers/100235-why-can-t-i-activate-matlab-or-start-the-network-license-manager-in-a-newer-linux-environment

For more information about Student Version Activation, please see:

https://www.mathworks.com/academia/student_version/activation.html