For the past few days my SEND/RECEIVE cycles using LIVE MAIL to retrieve my att.net email, operated by yahoo, appear to NOT be removing those emails on the server side. I do have the flag correctly set to remove emails once retrieved by LIVE MAIL. I have no alias's set up.  I am running version 2012 (Build 16.4.3528.0331) So when Live mail periodically checks the server it uploads all the same emails every time. I end up with all emails duplicated.

I have not made any changes to any settings AND all of this has been working fine for years.

If I go to att.net and check my emails right after an LIVE MAIL send/receive they are still there. If I delete them from att.net then when LIVE MAIL retrieves it all starts over as long as I do not delete the emails on the server using ATT.NET

I am getting the following error message at the end of the send/receive processing ...

UNABLE TO SEND OR RECEIVE MESSAGES FOR THE ATT MAIL SERVER ACCOUNT (even though I am getting the emails)

Server Error: 0x800CCC()

Server Response: -ERR [SYS/TEMP] problem retrieving message

Server: 'pop.att.yahoo.com'

Windows Live Mail Error ID: 0x800420CD

Protocol: POP3

Port: 995

Secure (SSL): Yes

UNABLE TO SEND OR RECEIVE MESSAGES FOR THE ATT MAIL SERVER ACCOUNT.

(But I am getting emails and emails I send are sent)

Any help would be appreciated.