I'm experiencing exactly the same issue as Bryce, I'm using Matlab 2018b with a floating license (shared with my colleagues), with a bunch of toolboxes on a shared network including Embedded Coder. I usually build Simulink models using Embedded Coder, without any trouble, and since yesterday Simulink returns that Embedded Coder is not installed or licensed, whereas the ver command shows Embedded Coder.
However when I run the first commands (license('test','RTW_Embedded_Coder')), I get 0, what does that mean ?
I get similar text from Simulink "The current target is: D:\APP\MATLAB\R2018b\rtw\c\ert\ert.tlc"
And same thing, I know that no one reserved the toolbox thanks to a windows script.
So how could Embedded Coder be unavailable from one day to another, has anyone solved such an issue ?
Thanks for you answers,