It was released to manufacturing on July 15, 2015, and later to retail on July 29, 2015. It is the direct successor to Windows 8.1, which was released nearly two years earlier.

Windows 10 is a major release of Microsoft's Windows NT operating system. Afrikaans, Albanian, Amharic, Arabic, Armenian, Assamese, Azerbaijani, Bangla (Bangladesh), Bangla (India), Basque, Belarusian, Bosnian, Bulgarian, Catalan, Central Kurdish, Cherokee, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dari - Persian (Afghanistan), Dutch, German, Greek, English (United Kingdom), English (United States), Estonian, Finnish, Filipino, French (Canada), French (France), Galician, Georgian, Gujarati, Hausa, Hebrew, Hindi, Hungarian, Icelandic, Igbo, Indonesian, Irish, Italian, Japanese, Kannada, Kazakh, Khmer, K'iche', Kinyarwanda, Konkani, Korean, Kyrgyz, Lao, Latvian, Lithuanian, Luxembourgish, Macedonian, Malay, Malayalam, Maltese, Maori, Marathi, Mongolian, Nepali, Northern Sotho, Norwegian Bokmål, Norwegian Nynorsk, Odia, Persian (Iran), Punjabi (Arabic), Punjabi (Gurmukhi), Polish, Portuguese (Brazil), Portuguese (Portugal), Quechua, Romanian, Russian, Scottish Gaelic, Serbian (Cyrillic, Bosnia & Herzegovina), Serbian (Cyrillic, Serbia), Serbian (Latin), Sindhi (Arabic), Sinhala, Slovak, Slovenian, Spanish (Spain), Spanish (Mexico), Swahili, Swedish, Tajik, Tamil, Tatar, Telugu, Thai, Tigrinya, Tswana, Turkish, Turkmen, Ukrainian, Urdu, Uyghur, Uzbek, Valencian, Vietnamese, Welsh, Wolof, Xhosa, Yoruba, Zulu

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