Windows 11, version 21H2
| Windows 11, version 21H2 (original version) | |||||
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The original version of Windows 11 (also retroactively named version 21H2 and codenamed "Sun Valley") was released in October 2021. It carries the build number 10.0.22000.It was retroactively named "version 21H2" by Microsoft per its naming conventions that are labeled "YYHX", with YY representing the two-digit year and X representing the half-year of planned release (for example, version 21H2 refers to builds which initially released in the second half of 2021).