On October 23, 2013 Windows LIve Mail stopped downloading new  messages. Error Message was "0x800CCC0F Server not responding due to server problems, network problems or a long period of inactivity"

Contacted ISP (AT&T); they indicate there is no problem, however one week later, entire UVerse network failed and repairs were made to the line. 

Repairs to line did not affect Live Mail; it's still not working. 

Protocol is POP3, using SSL  incoming port 995

Server settings have been verified with ISP.  Response timeout has been changed from 1 minute to 4 minutes with no resolution.

Computer has been scanned & scanned clear.  Only one antivirus program (AVAST) running.

Email scanner is turned off.

Temporarily turning off windows firewall has no effect.

Windows LIve Mail Repair has been run; it has also been reinstalled.

Webmail works.

Phone access to mail works.

Able to Download a "new account" (same email address, resulting in 11K messages downloading to inbox, but no updates occur).

Outgoing messages work.

When hitting send/receive, Windows Live Mail occasionally has a message saying "not responding"; a green bar shows messages are being received, but they do not download and then the error message pops up.

Any ideas?