In 2025, knowing your Windows 11 build number is crucial for troubleshooting, updates, and compatibility with new features like Recall or Wi-Fi 7. These methods work on all versions, from 21H2 to 25H2 preview.
Go to Settings > System > About. Look under "Windows specifications" for Version and OS build.
Press Win + R, type winver, Enter. Shows full build, e.g., "Version 24H2 (Build 26100.1)".
systeminfo | find "OS Version"
Shows "OS Version: 10.0.26100 N/A Build 26100".
Get-ComputerInfo | Select WindowsBuildLabEx
Gives detailed build string.
| Build | Version | Release Date |
|---|---|---|
| 22000.xxx | 21H2 | Oct 2021 |
| 22621.xxx | 22H2 | Sep 2022 |
| 22631.xxx | 23H2 | Oct 2023 |
| 26100.xxx | 24H2 | Oct 2024 |
| 26200.xxx+ | 25H2 | Mar 2025+ |
Try our tool for instant detection.