When I send a file and someone tries to access it, they're asked to register.

Hey @rbianchi, let's jump right into this! 

How exactly do they try to preview the file? 

Do they have the option to simply close the window, and proceed without signing into an account?

When you try to preview your file using an incognito tab on your browser, and while you're signed out of your Dropbox account, what do you see on your end? 

Keep me posted!

Hi Megan,

Thanks for the help.

In an incognito tab in my browser, and sign out of my Dropbox account, the link works fine.

I am a teacher and I use links to files in the educational system "Moodle"

In that environment, the link does not work.

Hey @rbianchi, it's a good thing that your link works as it should when you view it using an incognito mode. 

Unfortunately, I'm not well aware of the system you mentioned. However, can you tell me if they get any specific error messages, or send any screenshots of what they see on their end when trying to open the link? 

Thanks for flagging this use case to us.  It sounds to me like Moodle may be stripping the shared link URL of it's critical rlkey.  This is the portion of the URL which grants permission to the content.  Without it, link visitors would be asked to sign in with their dropbox account.  I'm checking with our engineering team if there is a solution.  Unfortunately we have limited insight into how other platform's process URLs within their environments.