|Windows 10 21H1|
|Kernel version||NT 10.0 (version 21H1)|
|CPU architecture||x86, x64, ARM64|
|Release date||18th May 2021|
|Support end||13th December 2022 / 9th May 2023|
|Preceded by||Windows 10 20H2|
|Succeeded by||Windows 10 21H2|
Windows 10 21H1 is an update for Windows 10. It was released on the 18th of May 2021.