I'm getting this message:

Your call wasn't connected. Please try again or leave a video message. (Error: 0x8ac70013)

Also, when invited to Receive a call, I do not get the invitation. (?)

Currently installed Windows Live Messenger Version 2011  (15.4.3555.308)

My camera is working fine (if I want to create a video message)

Is there an easy fix?

Thanks!