The problem occurs when something is wrong with the "cookie", which websites store some information in the cookie, so you don't need to enter the information everytime.
One thing you can do is
1. Open Internet Explorer
2. Go to "Tools" on the top menu.
3. In "Tools" go to "Internet Options" at bottom of the list.
4. In "Internet Options," at "General," the first page, you will see
"Temporary Internet Files". Please click "Delete Cookies" and also click "Delete Files". In "Delete Files", Please check "Delete all offline contents" then press "ok"
If the problem still exits, please go to "Problem Feedback" forum post.
Thanks,
Ken