I’ve been deploying Microsoft Office Communications Server 2007 lately for internal use and today the installation of the OCS Server 2007 is finally y completed (only the OCS Server in consolidated mode, still have to deploy the rest of the OCS role, mediation, edge servers, etc).

To test is the OCS configuration works, i will need to enable users and trying to login with Office Communicator 2007. To my horror, when I right-click on the user name in Active Directory Users and Computers snap-in (dsa.msc), the ‘Enable users for Communications Server’ is NOT VISIBLE!

After 2 days of frantic call to Microsoft and requesting for supports, no luck, I was wondering if I should just re-install the AD servers and the OCS Servers *_*, and in the last minute of before that is about to become true, I found an article depicting you can run dsa.msc mode in 32bit or 64bit, if you are running 64bit of Windows Server 2003.

So, I was thinking, what the hack why not?

I click on “Start” -> “Run” -> typed in ‘dsa.msc -32‘ without the quote, and OMG that missing ‘Enable users for Communications Server‘ is showing!

Apparently, the ocs extension can only runs in 32bit mode!