If you are trying to subscribe from a supported country and language ( copied from the One Care FAQs:The Windows Live OneCare subscription service is available in the following countries and languages: Australia (English), Austria (German), Belgium (Dutch, French), Canada (English, French), France (French), Germany (German), Ireland (English), Italy (Italian), Japan (Japanese), Mexico (Spanish), Netherlands (Dutch), New Zealand (English), Singapore (English), Spain (Spanish), Switzerland (French, German), United Kingdom (English), United States (English, Spanish) ), open Internet Explorer>Tools>Internet Options>General>Languages and add the localized language ( example: English ( Canada ) ).