Recently I was working on a project to migrate the organisation from Office 2010 to Office 2016 (365). After the upgrade we had some finance staff complaining that since the update Excel would take a long time to close. It was hard to narrow down the exact cause of this as there was also an update of Jet Reports at the same time. After a bit of investigating I recreated a users local profile which seemed to fix the issue. After doing this I compared the App Data\Roaming\Jet Reports\settings.xml file and compared the differences and noticed an interesting line of code as below <setting name="SendUsageStatistics" type="Boolean" encrypted="false"> <value> True </value> I then tested changing the send usage statistics value to false, closed Excel, reopened and now it works fine.