MATLAB: Do I get the error “The feature ‘RTWTesting’ has already been registered.” when launching Simulink

simulink

When I tried to launch Simulink and opened Simulink model, I got the following error and couldn't open it.
Error using open (line 146)
The feature 'RTWTesting' has already been registered.

Best Answer

  • At first, please try initialization for MATLAB preference folder and MATLAB path.
    To initialize MATLAB preference folder, please rename it. You can confirm MATLAB preference folder.
    >>prefdir
    To initialize MATLAB path, please run the following commands from Command Window.
    restoredefaultpath
    rehash toolboxcache
    savepath
    If the issue hasn't resolved, you might fail to install MATLAB/Simulink.
    Therefore, please try clean installation MATLAB as an administrator referring the following URL.
    https://jp.mathworks.com/matlabcentral/answers/131519-how-do-i-perform-a-clean-installation-of-matlab-on-a-windows-system