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    I have migrated my IM environment from LCS 2005 to OCS 2007 R2.  Most of the desktop clients in my environment are Communicator 2005.  When I upgrade to the Communicator 2007 client or the Communicator 2007 R2 client I can't sign in unless enhanced presence is enabled. If I enable enhanced presence on the account the account can no longer log in with the Communicator 2005 client.  I have approximately 5000 OCS users spread accross 10 sites so I cant update all of the clients at once.  Is there a way to upgrade to the clients to Communicator 2007 without enabling enhanced presence?

    Friday, September 4, 2009 3:02 PM

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    No. to enable user to use MOC 2007 you need to enable enhanced presence.

    But, if you enable enhanced presence for a user and this user login on MOC 2005 there are no problems, but if this user login a first time in MOC 2007 he can't log more in MOC 2005.
    So don't permit which the migrated users login on MOC 2007 before you have upgrade his client.

    Bruno Estrozi - MCSE/MCTS/MCITP - Unified Communications Specialist | http://brunoestrozi.spaces.live.com
    Saturday, September 5, 2009 6:06 PM