I don't know what changed and I don't know how to set it back,but now Super+E launches baobab instead of Nemo.I have check the keyboard - shortcuts configurations.and Launchers/Home Folder is associated to Super+E.There is no custom shortcuts.So my issues are of 2 types:the shortcut configuration seems correct in cinnamon panel,still it launches the wrong application(baobab), which doesn't appear in said configuration.What can I check and correct to get back default behavior: Super+E => Home folder?A package name to reinstall the default bindings would be ok as well.EDIT:when downloading with Firefox, show in folder menu trigger nemo,but When downloading with chrome, show in folder trigger baoab.So chrome seem to use the same information as cinnamon to launch nemo,but which one ?PS: So far I didn't found any answer that solve this specific issue (including on askubuntu.com.lsb_release -a ouputsNo LSB modules are available.Distributor ID: LinuxMintDescription:    Linux Mint 18 SarahRelease:    18Codename:   sarah
Cinnamon: lost default nemo launch for shortkey win + E
linux mint;cinnamon;nautilus;nemo
I finally found the issue in /usr/share/applications/mimeinfo.cache, with the following entry:inode/directory=org.gnome.baobab.desktop;nemo.desktop;changing it back to:inode/directory=nemo.desktop;solved the issue.It's the chrome behavior and the answer to Change Chromium from automatically launches Nautilus with the Show In Folder command that get me to the solution.EDIT: /usr/share/applications/mimeinfo.cache is regenerated from .desktop files present in folder /usr/share/applications/. Initial error is  in org.gnome.baobab.desktop and reappear each time mimeinfo.cache is regenereated. It is not clear how to fix this.