Just went through this with a client up for renewal - the license key change related to a payroll subscription change and brought Sage 100 to a screaming halt just at time of finishing 2016 p/r tax filings. We ran it as far up as the pole as we could and got Sage staff contradicting one another. One key person insisted that the change was made by us - it was not - the system did it itself about 3am on a Sunday evening. It goes out somehow and checks things every night, because trying to fix the license keys for this client went through about 3 iterations in 4-5 days - by itself. We turned off the auto-update before any of those license changes. We also could not get any more information other than a confirmation that there is now an ongoing check against the license entitlement server but no more details.