In our help center, we refer to the the bars along the top or bottom of your computer screen as the system tray (Windows/Linux) or menu bar (Mac). Your system tray or menu bar contains the Dropbox icon, which is where you access Dropbox settings.
The system tray or menu bar appears in different locations depending on your operating system. Select your operating system to learn more:
I don't see the Dropbox icon in my system tray or menu bar—did it disappear?
The Dropbox icon will only appear in your system tray or menu bar if the Dropbox desktop app is downloaded to your computer and running. Occasionally, the Dropbox icon will seem to "disappear," because the desktop app is inactive on your computer. To resolve, you can launch the application again or download (or re-download) the Dropbox desktop app and sign in to your Dropbox account when prompted.