Comment 1 for bug 315996

It might be worthwhile to try to run this from a DOS command prompt, to see where the problem lies.
- open up DOS with the command cmd
- change to the directory C:\Program Files\Inkscape\share\extensions\
- execute the command : python webbrowser_faq.py
- this should bring up a webbrowser which should attempt to connect to the URL : http://wiki.inkscape.org/wiki/index.php/FAQ

The URLs for the various items you are trying can be found in 8 files that begin with webbrowser_... and end with .py.

If the above procedure works, then it might be worthwhile to try to trap the Inkscape exit messages in DOS using the methods outlined at http://kaioa.com/node/42 or http://kaioa.com/node/63