There are three common reasons why you may be unable to access shared files and folders. This article explains each reason.
You see a "Request access" page
When someone shares a file or folder, they share it with a specific Dropbox account. Only the account owner can access the content.
The person you're sharing with may have sent an invitation to an account that you don't regularly use. Or they may have sent it to the wrong person.
In these cases you will see a page that prompts you to Request access. Once the sender approves your request, you can view the shared content.
Or, you can sign in to the account that the shared originally invited.
You don't have an account
In order to view shared files and folders, you must have an account. When you attempt to access shared content, a prompt to sign up for an account will appear.
If you don’t want to sign up for an account, ask the sharer to send a shared link instead.
You're not signed in
To access shared content, you need to be signed in. When you attempt to access shared content, a prompt to sign in will appear.