XP Professional, Media Center Edition. Every time I boot my pc I get this message: 'Cannot connect the phone book entry, Error 756: This connection is already being dialled'. This has been happening for the last month and I cannot relate the start to anything I have done. The error message is on top of the dial-up window. It is easy to close both of them and there is no further issue, but I would like to find out what is causing it and stop it. I do not have a phone book. Does anyone know what is causing this? Thanks, Soloist.