Good news & Bad news – Exchange 2013 Coexistence

Good news, Microsoft yesterday (12/02/13) finally announced the release of SP3 for Exchange 2010 and Exchange 2007 SP3 RU10 – these are the pieces we have been waiting for since Exchange 2013 was released back in early December to allow installation into an existing environment.

Bad news,   To do this, install Exchange Server 2013 Cumulative Update 1 (CU1). You cannot install Exchange Server 2013 in your existing Exchange Server 2010 organization by using Exchange Server 2013 RTM installation media.

At this time Exchange 2013 CU1 is slated for release Q1 2013 – looks like we will have to wait a little bit longer!

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