VG Thanks for the suggestion. I read Comcast mail on two desktops, one XP and one Win 7, both running Outlook 2003 and a laptop with Win 7 running Outlook 2007. All updates are current. I have been using this configuration successfully for at least six months. This morning Outlook 2003 on the Win 7 desktop system suddenly would no longer receive email, repeatedly giving the "'mail.comcast.net - Receiving' reported error (0x800408FC)". Outlook on the other two systems continued to received email fine. I restarted Outlook on the Win 7 system. I rebooted it. I checked all the Outlook setting, which are the same on all the systems, but nothing resolved he problem. I found the post you made almost 8 months ago regarding Outlook 2003 email problems. I disabled IPv6 on the Win 7 desktop and email started flowing into Outlook. Thanks for the fix, but it appears Comcast has had this IPv6 problem for at least 8 months. I'm really getting tired of Comcast's almost good enough technology. I can deal with having to reboot my router and modem periodically. I'm getting very concerned about lost and delayed email. (I've had a "Didn't you see my email" phone calls lately, 23 hours before the email showed up in my inbox; from the header, it was received by a Comcast server a few milliseconds after sending and sat there for almost a day.) I gave up on their tech support a long time ago. Why does Comcast expect me to go to them for all my communication needs when they can't even keep a 25 year old technology working. Eric
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