We have exchange 2013 SP1 would like to upgrade to CU9. there are two servers main server is SP1 the second server is CU9 while installing the second server the /prepad /prepschema /prepdomain completed.
Now planning to upgrade the first server to CU9 I was told no need to run prep again which is fine. Any other points I have to consider before running Setup.exe /upgrade from CU9 extracted folder?
Joe Frixon