Browsers are for things serving web pages, this is using Windows networking (well probably Samba) so your PC has to interpret it that way.
Originally Posted by jventola
If you type an IP address into a web browser address bar, as is, it will expect to find some kind of web page it can display. What you want to use is windows explorer and ensure you use a path like: \\<ip address> in the address bar - the direction of the backslashes is important, because it denotes the type of path it is - it's not a URL, it's a UNC path, that's something that Windows networking understands.
(for completeness, I'm fairly sure, from memory, smb and cifs paths can be expressed in XML type strings, with slashes the conventional way as in URLs, but that's partly dependent on the path including details of the protocol being used)