Does Windows MUI (set to a particular user interface language) differ from a localized version?
Yes, although functionally there is little difference. A Windows system with MUI will largely look and behave like the localized version, with some exceptions. MUI runs on top of the English version of Windows. From a feature and architectural point of view, localized versions of Windows are the same as English Windows XP. However, on localized versions: • The user interface resources are fully localized. • The Windows Setup information, such as system locale, user locale, keyboard layout, etc. is customized for the specific language/country. This is a policy setting with the Multilingual User Interface Pack. • Additional country specific device drivers are added in the East Asian versions only. • There is support for upgrades from localized versions of Windows 9X or Windows 2000 to localized Windows XP. MUI only supports upgrades from English versions. Because the resources used in a localized version are used to create MUI, there is no difference between the actual translations.