Defining custom presence states for Office Communicator 2007 R2

Late last year I wrote a blog post about defining custom presence states for Microsoft Office Communicator. Unfortunately, when I updated my client to Office Communicator 2007 R2, the custom presence states stopped appearing.

One of my colleagues told me that by default, Office Communicator 2007 R2 doesn’t support reading the custom presence information from a local file and that it has to come from a secure web server. I tried that without success (using Windows Live SkyDrive to serve the file as HTTPS) but the fix that eventually worked for me was to add another registry key – a DWORD value for EnableSIPHighSecurity (set to 0), in the same location as the CustomStateURL:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Communicator]
@=""
"CustomStateURL"="file:///C:/Users/username/Documents/presence.xml"
"EnableSIPHighSecurityMode"=dword:00000000

Whilst I’m revisiting this topic, it’s probably worth highlighting a couple more resources: