Emacs-version: 25.2.1 (x86_64-unknown-linux-gnu (I'm using Arch Linux) GTK+ version 3.22.10) as of 2017-04-22
Org-mode-version: 8.2.10
 
I created a file with C-x C-f and named it 'test.org' to get into org-mode.
Exporting to html and opening in a browser via C-c C-e h o doesn't work. The standard browser isn't opened. The html code is however exported into another buffer within emacs.