I was just trying to update to 4.1.5 and half way through I the install I got the following message
could not delete C:\Program Files (x86)\Openfire\jre\lib\ext\dnsns.jar
Could not create this file. Shall I try again:?
I am running the installation as Administrator
What version are you upgrading from? Is your server stopped? Do you have service installed and is it stopped if so?