If you can't download a file, it could be because of a bad internet connection or problems with your web browser. If you see an error message, try refreshing your browser and waiting a few minutes. After that, the problem might go away on its own. If you're using a school computer, the school might not allow downloading. In that case, you'll need to download the file at home and save it to cloud storage, such as Google Drive or Dropbox, or email it to yourself.