I am having some major issues updating Exchange 2013 to CU5.
At the beginning of the update, all Exchange services are changed to disabled.
The updater will them error out when trying to restart a service, because it can't with it being disabled. This is happening for nearly every step of the update.
What I'm having to do is manually switch all of the recently disabled services back to automatic. The biggest issue with this is that at the end of each step, the installer again disables all these services, so as each new step begins I have to again switch each service away from disabled.