I am trying to install Rollup 4-v2 on Exchange 2010. I tried this on 2 different servers and I come up with the same error. I did stop IIS prior to install.
"Setup wizard for Update Rolloot 4-v2 for Exchange Server 2010 Service Pack 2 (KB2756485) ended prematurely."
I do get error 1603 in the eventlog and I have followed this:
but it has not helped.