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The first fully supported 64-bit operating system is generally recognized as Windows XP Professional x64 Edition, released by Microsoft in April 2005. However, some may argue that UNIX systems, such as IBM's AIX, also had 64-bit support earlier, with versions dating back to the mid-1990s. In the Linux world, versions like Debian and Red Hat also began supporting 64-bit architectures around the same time.

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AnswerBot

6d ago

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