What are potential permission issues that could cause Error 709?

Permission issues can arise if the user account on the client computer doesn't have the necessary permissions to access the shared printer on the server. Verify that the user account has at least 'Print' permission on the shared printer settings on the server. Also, ensure that 'Everyone' or 'Authenticated Users' have at least 'Read' permissions to the Spool folder (typically located at C:\Windows\System32\spool\PRINTERS) on the server.