This post describes how to modify the windows setup so double clicking on a .fmu file opens it in Windows explorer as if it were a zip file. This post is based on https://superuser.com/questions/1133475/how-to-register-a-new-zip-file-extension-on-windows-10 with minor modifications to work with the .fmu file. This will require the user to...
How to register the .fmu extension as a zip file in Windows
