Why am I getting an error notice about having a POP folder saying "some other program is set to download and delete your messages from Outlook"???? What does this mean? Any suggestions? I could really use some advice here.

On every occasion I open windows live mail I get an error notice which reads :-  "Unable to Send and Receive Messages

                                                                                                                                   Server error  4102

 

                                                                                                                            Service ; http://mail.services.live.com

 

                                                                                                                                      DeltaSync_v2.0.0/sync.aspx

 

                                                                                                                                 Windows Live Mail error 0x8DE00001

 

 

   I am able to send email but not able to receive.  How can I cure this problem?

2011 for Mac- getting error notice that the program can't send email due to server issue. Same server info in iphone sends with no problem. Comcast refuses to help. I've un-installed & re-installed the program but it didn't help.
Outlook receives email with no problems.

Any ideas here?
Thanks for any help.