SSR 2013 not backing up user who are logged in.

Hi all, 

I am using SSR 2013 on Windows Server 2012 R2. Users connect into the computer using RDP so at one time there can be several active accounts.

I notice that when a user is logged in, in C:\users the logged in user profile will look like a shortcut file. Then when the back up runs in the evening it will fail for only the users who are logged in.

I have attached an image to show what I am getting. Does anyone have any ideas as to why this is happening?

Thanks

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