After more experimenting, I've determined the connecting to the server is fine. But the client is automatically logging in as a Guest. How do I stop that from happening?
Thank you for your posts.
Hold down the shift key as you open the file, and you will be prompted for Account Name and Password. If there is an option to save to Credential Manager, then make sure that box is unchecked.
Once the file is open, pull down the File menu and select "File Options...". Under the "Open" tab, make sure when opening "Log in using:" is unchecked. This will then prompt you each time the file is opened.