Hi Ruth,
Thank you for posting to Microsoft Community. I understand that you are having issues sending to a group via Windows Live Mail.
Please note that this is already a known issue and our Product Group is currently working on a fix, as what is stated in this thread. We apologize for any inconvenience encountered but rest assured that we will post back immediately once we have any updates about this concern.
Please get back to us if you have other questions.
Regards,
Glenda