Error:

Setup can't continue with the upgrade because the SFSEM (10884) has open files. Close the process, and then restart Setup.

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How can this be helpful?

 

http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.ProcessNeedsToBeClosedOnUpgrade.aspx

• Edited by Stryder66 16 hours 56 minutes ago

You need to stop what ever process is associated with PID 10884.  If SFSEM is a service stop it, if it is just a random process kill it via task manager.