If you’ve tried the basic troubleshooting steps to sync your files
and it didn’t fix the problem, follow the steps below.
Check your firewall, security, and antivirus settings
Your firewall, antivirus, or security settings can prevent your files from syncing on Dropbox. Learn how to give Dropbox full permissions.
Check your network restrictions
If you see an error like “can’t establish secure connection”, your network might have special security restrictions. You may have to enter proxy server information, connect to a LAN (local area network), or manually set the network to allow the “*.dropbox domain.” Learn more about which domains Dropbox uses.
If none of these fix the problem, check with an admin.
Check your file type
Dropbox can’t sync some kinds of files. These include:
- Files with certain suffixes. Files that end in “desktop.ini”, “thumbs.db”, “.ds_store”, “icon\r”, “.dropbox”, and “.dropbox.attr” won’t sync properly.
- Temporary files. These are created by applications like PowerPoint and Word, and often start with a ~$ (a tilde and dollar sign) or .~ (a period and a tilde).
- Certain types of files and metadata. These include:
- Symbolic links (Symlinks)
- Junction points
- Resource forks
- Networked folders
- Extended attributes
- Suspicious files. If you get an error message that says permission has been denied or that your file has been rejected by the server, Dropbox may have flagged the file as a copyright violation, DMCA violation, or malware. If you suspect this is the problem, contact support.
Make sure your app syncs changes automatically
Some non-Dropbox applications save changes automatically. However, if you edit a file in an application that doesn’t save changes automatically, you’ll need to save your changes manually by re-adding your file. Learn how to add files to Dropbox.
Check that the file isn’t read-only or locked
If your file is read-only or is locked by a non-Dropbox application, you can’t sync your file to Dropbox.
If the file has a lock icon on it, it was locked with Dropbox. Learn how to unlock your files.
Check available space
If you see a warning from Dropbox that you’re out of disk space, you can free up space on your computer to start syncing again.
Update or reinstall non-Dropbox applications
If you use a non-Dropbox application to edit your files, make sure the application is up to date. You can also uninstall and reinstall it, then check to see if your file syncs to Dropbox.