Oh dear, my beloved CS4 has frozen, with the title bar at the bottom of the page, the tool bar on the left, and the adjustments panel at the right. I can't move anything, I just get that dreaded ding. I have Windows 10, and thought I would have to uninstall, so I eventually found how to do that, and a warning came up that before doing that I should deactivate it (or else I will not be able to reinstall with this serial number), by going to any CS4 product, and selecting "deactivate" from the help menu. Adobe Bridge doesn't have a choice of "deactivate", Device Central doesn't address anything about CS4 and is on the web anyway not the local computer, as is Adobe Drive. Extendstrip Toolkit doesn't have the deactivate choice either. So, my question is, how can I deactivate, if anyone can help I'd really appreciate it.