Find out how to choose between the 64-bit or 32-bit version of Office. Get answers to some common questions about 32-bit and 64-bit versions of Windows.

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IMPORTANT Release notes are changing! To learn about the new URL, metadata updates, and more, see What’s next for Windows release notes. IMPORTANT Starting in July 2020, we will resume non-security releases for Windows 10 and Windows Server, version 1809 and later.