Why cannot find Exchange 2007 service pack 1 download, in microsoft exchange 2007 site in show below message, but it say Service Pack 1 is not yet available for download? I want to upgrade sp1, because I want to use Import-Mailbox on Exchange Management Shell(SP1). Where can i download it? Any one can help me? Exchange Server 2007 Service Pack 1 (SP1): This software is not yet available for download. Check back here again soon and/or watch for the impending release announcement on the Exchange TechCenter homepage.

MSDN or Technet plus subscription is required to get the beta.

Yeah, it's not actually out yet. All you can get is a beta and I don't think you want to be using that in a production environment.

remember that Microsoft does not recommend the installation of the beta SP1 software into a production environment. the release of SP1 is scheduled for some time in the first quarter, the last i heard. I would recommend against beta in production, unless you are a TAP customer you will not get support for your production servers. have fun in a test environment.