Windows has provided UI language packs for Icelandic since at least the release of Windows 8.0 in 2012, and now offers them for supported versions starting with Windows 7: https://support.microsoft.com/en-us/help/14236/language-pack... (The UI translation/localization is partial; the most read strings are in Icelandic, but the rest are typically in English, and you need to install the English UI language pack to load those strings.)

And if you go to Bing's website https://www.bing.com and set your browser to request webpages in Icelandic (via an "Accept-Language: is" HTTP header), then much of the website changes to Icelandic. However, the search query auto-complete suggestions and the search results will only be in Icelandic if you are in Iceland yourself.

From the article, it seems like the Guardian reporter either didn't know this, or doesn't think Microsoft is important (!):

> Online, however, is the biggest concern. Apart from Google – which, mainly because it has an Icelandic engineer, has added Icelandic speech recognition to its Android mobile operating system – the internet giants have no interest in offering Icelandic options for a population the size of Cardiff’s.