Enabling Access to File Shares in Forum Threads 
Use the procedure to enable access to file shares in the threads. When this functionality is enabled forums users can include a path to the location of a file share in the thread. Forum users who have the required permissions for the share can assess it directly from the relevant thread.
You have activated the HTML and Wiki Syntax Filter filters. For more information, see Reformatting Messages.
From the forum administration console, choose System.
In the navigation pane, choose System Properties.
At the bottom of the System Properties page, locate the Add new property section.
In the Property Name parameter, add the new property: fileURL.enabled.
In the Property Value, add value: true.
Save your entries.
From the forum administration console, choose Content.
In the navigation pane, choose Message Filters.
In the Pre Processing Filters section, choose .
In the Allowed src/href Schemes add the network file sharing protocol (for example, file://).
Save your entry.
From the forum administration console, choose Content.
In the navigation pane, choose Message Filters.
In the Filters section, choose .
In the Allowed URL schemes add the network file sharing protocol (for example, file://).
Save your entry.