Seeing an "x" on the Dropbox icon in the system tray or menu bar on your computer? Here are some possible reasons:
- Your Dropbox is on a network device or removable hard drive with an inconsistent connection. If this is the case, restarting Dropbox may help. However, we recommend you keep your Dropbox location on the same hard drive as your operating system.
- You're having difficulty establishing a secure connection. Correcting your system time or adjusting your proxy or firewall settings may help.
- You're over your storage quota. You should make room in your Dropbox by removing files (or consider upgrading your storage quota). If you've been paying for a Plus or Professional subscription, check your account page to make sure your plan hasn't been downgraded. If you're a member of a Dropbox Business account, ask your admin to check the team's account status in the Admin Console.