Error 691 is an authentication error that occurs when either the username or password entered was incorrect.   Things you can try when receiving this error: Retype the username and password Ensure that the username is following the proper format (username@nexicom.net) Make sure your Caps Lock is off when typing the password as it is case sensitive Delete and recreate the connection on the computer Note: Some dial-up users will need to use the formatting idm/nexicomflat/username@nexicom.net for their username. If the above suggestions don’t work for you or you cannot remember what your username and/or password might be, please give Read more