0x80191002

Having a very short query and need some working solution for the same. Am using Windows Vista mail, it was working but started problem while sending emails since last 4 days. Whenever I send the mail, it gets failed with the following error:

Subject 'puppies pix', Protocol: HTTP Mail, Server Response: 'There is an error synchronizing your mail account. Please verify your account has been configured correctly by first accessing your mail on the web.', Port: 0, Secure(SSL): No, Error Number: 0x80191002

Somebody please help me fixing this issue. Thank you.

The very first thing you need to check in this is to confirm with your ISP whether they have made any changes in SMPT servers. If that is proper than I guess the problem would be Windows Live Mail itself or its account. You need to delete all accounts and re-create them again.