Problem: when you send a link from Communicator client to another, the link isn’t clickable, has a _ (underbar) in front of it, or both.  Results may be different on different computers. It’ll look like this

_http://www.google.com

Solution:  Two things are happening here that are not related.  The first is the OCS Server (and Edge Server) have the URL Filter enabled, which are adding the _ underbar to all links.  Also called “Intelligent IM Filter”.  You need to tone that filter down or disable all together to your liking.  If users are coming in through an Edge Server, they will follow the Filter settings of the Edge Server they are using, which seams to supersede the Front End Server (my guess is the most restrictive wins).  So be sure to set it on both servers separately.  Results were instant in new IM’s.

The other issue is the lack of a clickable hyperlink.  If you disable the URL Filters above, the underbar goes away but links are still not blue and underlined.  To fix this you need to apply a GPO or set a local registry setting to allow Communicator to make hyperlinks clickable:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Communicator\
new DWORD EnableURL=1

After that exit and restart Communicator.

In both of these cases they are secure by default, which is great; but even years after this features release over several versions their use and configuration are still a mystery to most starting out.

Here is a quick way to tell what software a web server is running

1. Open a command prompt
2. Enter: telnet [SERVER NAME/IP] 80
3. Enter: HEAD / HTTP/1.0
4. Enter: [blank line]

In Firefox

1. In the Address Bar, type: about:config and either press the ENTER key on the keyboard or click on the GO button
   
   
2. On some machines you may get the warning message shown below.  If you follow our steps, you will NOT void your warranty
   
   
3. When the new page appears with the configuration settings, In the Filter bar, search for NTLM and the result will show 3 entries. The one you need is NETWORK.AUTOMATIC-NTLM-AUTH.TRUSTED-URLS. Double-click the NETWORK.AUTOMATIC-NTLM-AUTH.TRUSTED-URLS entry to open the Enter string value window
   
   
4. When the Enter the string value window opens, type the portal URLs that you wish to access automatically, separated by a comma. Note:  If you want to set it up for the entire domain, just enter .yourdomain.com
   
   
5. When you are finished, click OK.
6. You should now be able to nagigate to an NTLM protected website and access it without being prompt for credentials (as long as you current have access to it)

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