I would like to silently update Firefox in the background without a user starting the browser (or even being logged in). Is there any way to do this?? On Windows, the Mozilla update service (if installed) makes Firefox updates silent, but updates are only discovered when the Browser is started and recognizes that there is an update. Not all machines have the service installed. The latest Firefox installer can be run silently, but that installs the latest version over top the older version. It does not update. At the very least an "over-install" removes extensions in the "program directory/distribution/extensions" and puts an icon on the desktop if there isn't one. There are probably other subtle differences too (download size?). At a minimum there should be something like an "/update" switch to have a similar effect as a user starting the browser and opening the "About" dialog window. It should initiate and complete (if the update service is installed) the internal update process but silently (i.e. without any windows). Even better would be if it didn't require the service when run elevated and didn't create a profile (e.g. for the case where it is run as SYSTEM). If this exists, it is not well documented. If not, why not?? This is not an unusual request (based on my searches) or an unreasonable feature. If it uses the same, existing process that the GUI uses, then I don't see a security risk either. Thanks.