Why do I get an error regarding Simulink Control Design when I try to open PID Tuner for PID Controller?

On clicking the "Tune" button inside the PID Controller block dialog, I receive the following error message:

Error evaluating 'MaskDialog' callback of PID 1dof block
(mask) '.../.../PID Controller'. Callback string is
'pidpack.PIDConfig.callbackTuneButton(gcbh)'

'.../.../PID Controller' requested use of the PID tuning
tool. Use of the PID tuning tool requires a Simulink
Control Design license, but license checkout failed.

Answer 1

[MathWorks Support Team]

Using PID Tuner App to tune a PID Controller or PID Controller (2DOF) block in a Simulink model requires that you have "Simulink Control Design" toolbox installed and licensed for.

(1) Enter the following command at the MATLAB Command Window to see a list of all installed toolboxes:

>> ver

If  "Simulink Control Design" does not appear in the list returned by the above command, add the toolbox to your MATLAB installation as explained in the following post:

https://www.mathworks.com/matlabcentral/answers/101885-how-do-i-install-additional-toolboxes-into-an-existing-installation-of-matlab

(2) Now, enter the following command at the MATLAB Command Window:

>> license checkout Simulink_Control_Design

If the answer to the above is zero, i.e. ans=0, it means that the license checkout for "Simulink Control Design" toolbox has failed. Please contact your local MATLAB license administrator, or contact our Installation Support team:

https://www.mathworks.com/support/contact_us.html