I'd reboot the computer , maybe a few times and try OE each time
sometimes things will get a little scrambled and after a few reboots - all might get fixed...

If not -
You might try a system restore to when it was working correctly..

I'm a bit confused I think ...
So the outlook express doesn't open at all?
Or
It opens but it won't download your emails?

I'm not sure where you are logging into?
a profile on a shared or public computer, or is it for your "pop" email password? gmail, yahoo, hotmail etc.


more help here-
http://support.microsoft.com/search/...3comm=1&res=80