A solid blue circle with two white arrows going in a circle means that your file or folder is in the process of syncing. This includes when you are uploading new files to Dropbox or updating existing files in your Dropbox account.
A solid blue circle with two white arrows going in a circle means that your file or folder is in the process of syncing. This includes when you are uploading new files to Dropbox or updating existing files in your Dropbox account.