Have external authentication set up for FM server 15 with several databases. When a user logins in with WebDirect it shows all the databases and a user may click a database and have access. In FM Go 15 or Filemaker Pro, a user logs in and then see the databases they have access too, but upon clicking on a database they are promoted for their user name and password again. Is there a way to make it so once a user logs in with FM Go and FM pro that they do not have to login a second time?

This is from having the Server set up to only allow users to view files they have access to - in order to do that, the server asks for their credentials, and then shows a list of files.

Then when they choose a file to open, it asks for the credentials for the file.

If they are generally only using a particular file, I would set them up with an Opener file on their desktop that directly opens the required file, so the first part above doesn't happen.