Resolving MMC 3.0 errors when installing Exchange 12 CTP release
Are you experiencing problems installing the Exchange “12″ CTP release? More specifically are you getting the below error message during setup?
“Exchange Server ’12’ requires Microsoft Management Console 3.0.”
Then chances are you have installed the RTM version of the MMC 3.0 instead of the MMC RC1 release.
In order to fix this problem see this post by Nino Bilic over at the MS Exchange team blog.
