If the file was shared via a link, it may have expired, been disabled, or exceeded its daily bandwidth limit (20 GB for Basic accounts).
You cannot download folders larger than 250 GB or containing more than 10,000 files directly from the web. can't download dropbox file
Accumulated cookies or cache can interfere with the "Download" button script. If the file was shared via a link,
Firewalls, VPNs, or antivirus programs might flag the Dropbox domain and block the transfer. 2. Immediate Fixes for Browser Issues If you are using the web interface, try these steps first: Download limit reached - Dropbox Community it may have expired