Data Center | 4. Juni 2009 | Helge Klein Where is the Hosts File on Windows x64?[A German translation of this article is available at faq-o-matic.net.]The subtle differences between 32-bit and 64-bit Windows present so many intricacies and pitfalls that even Microsoft employees seem to have trouble getting it right. I just stumbled upon a KB article that describes how to reset the hosts file to its original state. The topic alone is funny enough – it is not as if the default hosts file contained great amounts of data.