


I've cleared the registro of "Dropbox" and "DropboxUpdate folders. I've tried installing on a different account (with administrator privileges) on the same computer - same error. I've updated to the latest windows 10 build. I've made sure the system time is up do date. I've disabled antivirus, firewall, proxy, and VPN software. My system administrator has given my user account full access to the dropbox folder I've installed several older version listed as stable on the Dropbox community forum, as well as several stable offline versions. I've deleted the cache so it can rebuild. Partially with input from Matt from Dropbox support (who have since become unresponsive and unhelpful despite reminder emails), I've tried the following to fix the problem: Dropbox is then listed under "Apps & features", but nothing happens when I load it. All Windows explorer windows close when this happens. When it tries to install, it downloads Dropbox successfully, then says "Installing Dropbox." for about 30 seconds, and then the installation window disappears. I've uninstalled and reinstalled dropbox several times. Its icon didn't appear in my system tray icons, and it wouldn't load when started - it would show up in Task Manager and then disappear after maybe 5 seconds. A few weeks ago, Dropbox suddenly stopped working. I have Dropbox Plus, which I've been using for about five years now on my Windows 10 machines.
