Oh this is going to be fun
My experience of Adobe products is that they make perhaps the worst updating software in the World.
Inevitably you need to update the updater. It takes pretty much forever to get the file no matter how fast your connection. You start the updater updater - at which point you have to quit the application you've been trying to use.
It installs. Then you try to run the new version of the updater which lists a dozen different patches. You find the one with the lowest version date, it downloads (slowly), starts running, then complains this update isn't compatible with the existing version of the application.
So you exit the updater, go to the Adobe site, battle your way through layer upon layer of nonsense to get files whose names seem to be plucked from the thin air. Download those - and it's still only an hour since you fired up the original application.
Run the installer which works for a while, the progress bar gets about half way - and then it freezes - for hours. Quit the updater and try to run it again - oh but it can't because the update has been applied!
Too much trouble. I need to do some work. Start the original application again, the updater fires up to say there are patches which need to be applied - including the one you supposedly just installed. At which point you kill the updater and disable it from ever running again figuring that having a broken version of the application vulnerable to attack is much less stressful than trying to do things Adobe's way.
Oh and that's on a Mac, god only knows if it manages to be worse on Windows, but I find it hard to believe Adobe could resist additional laughs by buggering around with the Registry.