Office Communicator 2007 R2 trial edition has been re-released.

You can get it here.

 

This update fixes the following issue:

  • After you apply the MS09-056 security update that is described in Microsoft Knowledge Base (KB) article 974571, you cannot start the Evaluation version of Office Communicator 2007 R2.
This update also fixes the following issue that occurs in the earlier releases of the Evaluation version of Office Communications Server 2007 R2 and the Evaluation version of Office Communicator 2007 R2:
  • The license expiry dates for the Evaluation version of Office Communications Server 2007 R2 and for the Evaluation version of Office Communicator 2007 R2 are calculated incorrectly. Therefore, the Evaluation versions expire on June 13, 2009. The updated Evaluation packages calculate the correct expiration dates as the installation date plus 180 days.

See the full KB article: KB980093