Started getting a window popping up when I go onto my Sky email. I use Windows Live Mail set up is IMAP and it's worked fine for years.

Message is "The server webmail.openwork.uk.com at webmail.openwork.uk.com requires a username and passowrd. Followed by the usial ID and p/s boxes.

Any idea why this has just started ? I see there is an intermitent problem at some locations, but the Post Code checker shows no issue at my exchange.

Thanks
Andrew