An URL to a Windows shared folder [duplicate]

I think there are two issues:

1. You need to escape the slashes.
2. Browser security.

Explanation:

1. I checked one of mine, I have the pattern:

   <a href="https://stackoverflow.com/questions/5796215/file://///server01\fshare\dir1\dir2\dir3">useful link </a>
   

   Please note that we ended up with 5 slashes after the protocol (file:)

2. Firefox will try to prevent cross site scripting. My solution was to modify prefs.js in the profile directory. You will add two lines:

   user_pref("capability.policy.localfilelinks.checkloaduri.enabled", "allAccess");
   user_pref("capability.policy.localfilelinks.sites", "http://mysite.company.org");