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How to Check Windows 11 Build Number (Complete Guide 2026)
The Windows 11 build number identifies the exact operating system build installed on your computer. Unlike the Windows version, which refers to a major feature release, the build number changes more frequently as Microsoft releases cumulative updates, security patches, and bug fixes.
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| Learn how to check your Windows 11 build number using Settings, winver, Command Prompt, PowerShell, and System Information. This guide explains the difference between the Windows version and OS build, helping you verify installed updates, troubleshoot issues, confirm software compatibility, and ensure your PC is running the latest Windows 11 build. |
Knowing your build number can help you troubleshoot problems, verify software compatibility, and confirm whether your PC is fully updated.
Method 1: Check the Build Number Using Settings
- Open Settings.
- Select System.
- Click About.
- Scroll to Windows Specifications.
- Locate OS Build.
The OS Build field displays your installed Windows build number.
Method 2: Use the Winver Command
- Press Windows + R.
- Type winver.
- Press Enter.
The About Windows dialog displays your Windows edition, version, and build number.
Method 3: Use Command Prompt
systeminfo
Look for the OS Version line, which includes the installed build number.
Method 4: Use PowerShell
Get-ComputerInfo | Select OsBuildNumber
This PowerShell command displays only the installed Windows build number.
Method 5: Use System Information
- Press Windows + R.
- Type msinfo32.
- Press Enter.
The System Summary page includes the operating system version and build information.
Windows Version vs. Build Number
| Item | Description |
|---|---|
| Version | Major Windows feature release (such as 23H2 or 24H2). |
| Build Number | Specific operating system build installed after updates. |
| Experience Pack | Additional Windows feature package released separately. |
Why the Build Number Matters
- Verify the latest Windows updates.
- Check software compatibility.
- Identify security patch levels.
- Troubleshoot Windows issues.
- Confirm feature availability.
- Compare builds with Microsoft documentation.
How Often Does the Build Number Change?
Microsoft updates the Windows build number whenever cumulative updates, preview builds, or major feature updates are installed. As a result, your build number may change several times throughout the year.
Related Articles
- How to Check Windows 11 Version
- How to Find Your PC Specifications
- This PC Can't Run Windows 11: How to Fix It
- (Coming Soon) How to Check Windows 11 Edition
- (Coming Soon) How to Check Windows Activation Status
- (Coming Soon) How to Check Windows Installation Date
Frequently Asked Questions
Is the Windows build number the same as the version?
No. The version refers to the major Windows release, while the build number identifies the exact installed build.
Can two PCs have the same Windows version but different build numbers?
Yes. One PC may have newer cumulative updates installed, resulting in a higher build number.
Does the build number change after Windows Update?
Yes. Installing Windows updates usually increases the operating system build number.
Final Thoughts
Checking your Windows 11 build number is a simple but valuable step when troubleshooting problems, verifying updates, or ensuring software compatibility. Whether you use Settings, winver, Command Prompt, PowerShell, or System Information, Windows provides multiple built-in ways to view the exact build installed on your computer.