Vista the computer must be restarted before updating can continue
linkid=34707.] Microsoft Exchange Server 2007 setup cannot continue because its attempt to install the Client Access Server or Unified Messaging server roles failed because the Distributed Transaction Coordinator service is not started on the target computer.
Exchange 2007 setup requires the computer that you are installing Microsoft Exchange to have the Distributed Transaction Coordinator service status set to Started.
I tried this repeatedly with and without an internet connection and it does the same thing.
I recently have been having problems with Mc Afee Antivirus.
Every time I log on to the Security Center screen it says, "system not protected" as a result, I tell it to "Fix it" and it updates.
Much more rarely they're caused by a mistake on Microsoft's part regarding the update itself.
Any of Microsoft's operating systems could experience freezing issues during Windows updates including Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and more.