UNC Paths in Google Chrome
How about the Enable local file links extension for file://
links?
Overview
Make it possible to open by click a link to a local file that is disabled by Chrome. In Google Chrome, links to local files are disabled, unlike IE. This extension allows you to open a link to a local file by clicking it.
[Security] A malicious page can not open a local file without permission, because this extension reacts only to the click operation by the user.
[Others] Personal information is not collected / used. Source code is released to GitHub (see "Website" link).
I just downloaded the latest chrome beta and <a href="file:///\\share\blah\blah\file.txt">
works.