clicking on a .m file from windows explorer opens up a new instance of Matlab

Hi all,

I am a bit troubled. I recently installed Matlab 2018a on my computer. One problem though, each time I double clik on an .m file from the windows explorer, a new instance of Matlab opens instead of adding the file in the already existing editor.

I have tried all three solutions proposed here

as well as running the .m file and restart matlab as suggested there https://www.mathworks.com/matlabcentral/fileexchange/51165-matlab-file-association-fix

But none of this seems to work.

One thing that troubles me is that right cliking on a .m file, then property shows that the .m file will open with the matlab starter application. I am not sure if this is normal.

Any ideas ?

Thanks a lot