The first thing I'd do would be to check the setup I have for your incoming server to be sure they're what your service provider requires. If that's OK, I'd go online to your service's email and see if that's working. If not, call your service's support. If it is, I'd back up my contacts and any email I wanted to save, then uninstall & reinstall WLM.
`
Good luck.
I cannot receive emails in windows live mail. I can send with no problem,but when I check mail I am asked for user name and password. When I enter e information, the request continues to pop up. What should I do?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic