As part of a domain/organization migration, I installed a brand-spankin' new Exchange 2010 SP3 server. I've been using MSME 7.6 for years on an Exchange 2010 SP2 server, but now I can't get MSME to install. There are a couple of documents that support has given me already that haven't helped - for instance, there's the one to set the script execution policy to "remotesigned," and the one to add some McAfee program dirs to the path - neither helped. The install gets frustratingly close to completion (like, it looks about 98%), and then rolls back.
i would suggest to either install msme 8.5 or at minimum 8.0 instead of 7.6. it's most likely a problem trying to install the agents due to the exchange sp that is installed. the newer versions of msme take care of this problem.