I've had this post rattling around in my head for a few months now, but I've never had enough hard data to really flesh it out as well as I'd liked. I still don't, but I need to get this down on paper. Apps deployed via Group Policy expire from the local cache. This can be a problem if the app is removed from the servers, or if you make changes to an existing app that would make its MSI not match the installation (Product/Package code changes, etc). I don't have the details as to why - whether it's...