How to Check Which Windows Version and Build You’re Running

30 Jul 2026

When troubleshooting a Windows problem, one of the first questions an IT engineer may ask is:

“Which Windows version and build are you running?”

It sounds simple, but Windows uses several different labels:

Windows 10 or Windows 11
Home, Pro, Enterprise or Education
Versions such as 24H2, 25H2 or 26H1
OS builds such as 26100, 26200 or 28000
Longer build numbers containing a monthly update revision
64-bit, x64 or Arm64 architecture

These details are related, but they do not mean the same thing.

Knowing the exact edition, version and build can help establish whether:

The computer is receiving security updates
A feature should be available
A known Windows issue applies
A driver or application is compatible
Two computers are genuinely configured alike
An update has installed successfully
A device is running a normal public release or an Insider build

Microsoft provides several built-in ways to find this information. The quickest methods are Settings and winver, while Command Prompt and PowerShell are useful when the result must be copied into a support request or collected from several computers.

The Quickest Method: Use Winver

Press:

Windows key + R

Enter:

winver

Then select OK or press Enter.

The About Windows window displays information including:

The Windows product name
The feature-update version
The complete OS build
Copyright and licensing information
The registered organisation or user, where applicable

Microsoft specifically recommends winver as a quick way to display the installed Windows version and build.

A result might look similar to:

Microsoft Windows

Version 25H2

OS Build 26200.#####

The digits represented by ##### change as cumulative updates are installed.

For most support requests, a screenshot of this window provides the essential version information without exposing the much wider range of system details produced by other commands.

Check Through Windows Settings

You can also find the information through the normal Windows 11 interface.

Open:

Start > Settings > System > About

Scroll to Windows specifications.

This section displays:

Edition
Version
Installed on
OS build
Experience

Microsoft identifies the About page as the standard graphical location for checking the Windows edition, version and OS build.

The same page also contains Device specifications, including:

Processor
Installed RAM
Device and product names
System type
Pen and touch capability

This makes the About page particularly useful when a support engineer needs both Windows and hardware information.

Open the About Page Directly

Press Windows key + R and enter:

ms-settings:about

Press Enter.

This opens the System About page without navigating through the Settings menus.

What the Different Windows Labels Mean

A typical Windows specifications section might show something like:

Edition: Windows 11 Pro

Version: 25H2

Installed: 15/10/2025

OS build: 26200.#####

Experience: Windows Feature Experience Pack ...

Each field answers a different question.

Edition

The edition identifies the Windows product and its licensing or management capabilities.

Common editions include:

Windows 11 Home
Windows 11 Pro
Windows 11 Enterprise
Windows 11 Education
Windows 11 Pro for Workstations

Edition can affect the availability of features involving:

Business management
Domain joining
BitLocker administration
Hyper-V
Group Policy
Windows Sandbox
Remote Desktop hosting
Enterprise security controls

Do not confuse edition with version. Two computers can both run version 25H2 while one uses Windows 11 Home and the other uses Windows 11 Pro.

Version

The version identifies the Windows feature-update release.

Names such as:

24H2

25H2

26H1

indicate the release period.

For example:

24H2 means the second half of 2024.
25H2 means the second half of 2025.
26H1 means the first half of 2026.

At the time of writing, Microsoft’s Windows release information lists supported Windows 11 releases including 25H2 and 26H1, while its July 2026 message centre also references updates for 24H2, 25H2 and 26H1. The version available on an individual device can depend on its hardware, edition, update readiness and deployment policy.

Do not assume a computer is outdated merely because it does not show the highest version number you have seen elsewhere. Some releases or configurations may target different devices, while business administrators may deliberately hold computers on a particular supported version.

OS Build

The OS build identifies the underlying Windows code branch and its installed servicing revision.

Microsoft maps Windows 11 versions to build families. Examples include:

Windows 11 23H2: Build 22631

Windows 11 24H2: Build 26100

Windows 11 25H2: Build 26200

Windows 11 26H1: Build 28000

The 23H2, 24H2 and 25H2 build mappings appear in Microsoft’s Windows 11 Configuration Manager support information, while Microsoft’s current supported-version information identifies build 28000 for 26H1.

A complete OS build may look like:

26200.8117

In this example:

26200 identifies the main build family.
8117 identifies the installed servicing revision.

Monthly security, preview and out-of-band updates can increase the revision while the feature-update version remains the same. Microsoft’s release notes, for example, reference complete builds such as 26200.8117 and 26100.8117 for particular cumulative updates.

This is why two computers can both report Windows 11 version 25H2 but have different complete OS builds.

Installed On

The Installed on date normally relates to the current Windows installation or feature-update state.

It does not necessarily tell you when the computer was purchased or when Windows was first installed on the device.

A major feature update, repair installation or reset may change the displayed date.

Experience

The Experience field may contain a Windows Feature Experience Pack number.

This relates to certain Windows experience components that can be serviced separately from the main operating-system build.

For ordinary troubleshooting, the edition, version and OS build are usually more important. However, the Experience number can be useful when comparing two PCs that appear to be on the same Windows build but behave differently.

Use System Information

Press Windows key + R, enter:

msinfo32

and select OK.

System Information opens with the System Summary page selected.

Look for:

OS Name
Version
System Manufacturer
System Model
System Type
BIOS Mode
BIOS Version/Date
Secure Boot State

Microsoft lists msinfo and msinfo32 as supported methods for opening Windows System Information and viewing version details.

This method is useful when you also need to establish:

Whether Windows is using UEFI
The exact laptop or desktop model
The BIOS or firmware version
Whether the processor architecture is x64 or Arm64
Whether Secure Boot is active
How much physical memory is installed

Save a System Information Report

In System Information, select:

File > Export

Choose a destination and save the report as a text file.

Alternatively, use:

File > Save

to create an .nfo file that can be reopened in System Information.

Review the contents before sharing the report outside your organisation. It may contain computer names, hardware identifiers, drivers and other environmental information.

Check From Command Prompt

Open Command Prompt and run:

systeminfo

The command displays detailed operating-system and computer configuration information, including the OS configuration, product information, memory, storage and network-adapter details. Microsoft documents systeminfo as supported on both Windows 10 and Windows 11.

A typical section may look like:

OS Name: Microsoft Windows 11 Pro

OS Version: 10.0.26200 N/A Build 26200

OS Manufacturer: Microsoft Corporation

OS Configuration: Standalone Workstation

System Type: x64-based PC

Display Only the Windows Name and Version

The complete systeminfo report can be lengthy.

Use:

systeminfo | findstr /B /C:"OS Name" /C:"OS Version"

This returns only the most relevant lines.

Microsoft includes this filtered command in its official guidance for checking the installed Windows version from either Command Prompt or PowerShell.

Save the Result to a File

Run:

systeminfo > "%USERPROFILE%\Desktop\systeminfo.txt"

This creates:

systeminfo.txt

on the current user’s Desktop.

Because systeminfo can include product, computer, update and network information, review the file before posting it publicly or sending it to an external party.

Why Does Windows 11 Sometimes Say Version 10.0?

Command-line and management tools may show a value such as:

10.0.26100

even though the computer is running Windows 11.

This does not mean Windows 10 is secretly installed.

Microsoft documents that Windows 11 can report its Operating System property as:

Microsoft Windows NT Workstation 10.0

which is also used by Windows 10. Microsoft advises management tools to distinguish Windows 11 by its OS build, with Windows 11 beginning at build 22000 and later.

Therefore:

10.0.19045

belongs to the Windows 10 build family, while:

10.0.26100

belongs to Windows 11 version 24H2.

Use the OS Name, feature-update version and build number together rather than interpreting the first 10.0 digits alone.

Check With PowerShell

Open PowerShell or Windows Terminal and run:

Get-ComputerInfo

Microsoft’s Get-ComputerInfo command produces a consolidated object containing operating-system and system properties. It is available on Windows and was introduced with Windows PowerShell 5.1.

The complete output is extensive, so select only the information you need:

Get-ComputerInfo |

Select-Object OsName, OsVersion, OsBuildNumber, OsArchitecture

A result may look similar to:

OsName : Microsoft Windows 11 Pro

OsVersion : 10.0.26200

OsBuildNumber : 26200

OsArchitecture : 64-bit

To display version-related properties more broadly, Microsoft documents:

Get-ComputerInfo -Property "*version"

This can include Windows, BIOS and embedded-controller version information.

Copy the Result to the Clipboard

Use:

Get-ComputerInfo |

Select-Object OsName, OsVersion, OsBuildNumber, OsArchitecture |

Out-String |

Set-Clipboard

You can then paste the result directly into a support ticket or email.

Check Several Computers Remotely

Windows’ built-in systeminfo command supports querying another computer through its /s parameter, provided the required network access, permissions and management configuration are in place. Microsoft also documents optional domain credentials for authorised remote queries.

For example:

systeminfo /s COMPUTER-NAME

In a managed business environment, it is normally better to collect version information through approved platforms such as:

Microsoft Intune
Configuration Manager
Remote monitoring and management software
PowerShell remoting
Endpoint-management reporting

This allows the organisation to identify devices that are:

On unsupported releases
Missing cumulative updates
Running unexpected editions
Using preview builds
Failing feature-update deployments

Hamilton Group can provide this visibility across a complete business environment rather than checking every PC manually.

Check Whether You Are Running an Insider Build

Windows Insider builds are pre-release versions used for testing forthcoming Windows features.

Signs that a computer may be using an Insider build include:

A desktop watermark
A higher or unusual build number
Insider settings enabled
Features that are unavailable on normal production computers
More frequent preview updates

Open:

Settings > Windows Update > Windows Insider Program

Check whether the device is enrolled and which channel is selected.

A business computer should not normally enter the Insider Program accidentally. Preview builds can introduce compatibility, stability and support complications.

Record the complete build with winver before leaving or changing an Insider channel.

Version, Build and Update Are Not the Same Thing

These terms are often used interchangeably, but they identify different layers.

Feature update

A feature update moves Windows to a release such as:

24H2 → 25H2

This normally changes the displayed version and may change the main build family.

Quality or cumulative update

A cumulative update usually keeps the same feature-update version but changes the complete OS build revision.

For example:

Version: 25H2

Old build: 26200.xxxx

New build: 26200.yyyy

Optional preview update

An optional non-security preview update can introduce fixes that are expected to form part of a later cumulative security update.

Out-of-band update

An out-of-band update is released outside the normal schedule to address a particular issue.

Microsoft’s Windows message centre and update-history pages associate individual updates with the versions and complete OS builds they affect.

When reporting an update problem, provide both:

Windows version: 25H2

OS build: 26200.xxxxx

Saying only “I have Windows 11” is rarely enough.

Check Whether Windows Is 64-Bit, x64 or Arm64

Open:

Settings > System > About

Under Device specifications, look for:

System type

Examples include:

64-bit operating system, x64-based processor

or:

64-bit operating system, ARM-based processor

This matters when downloading:

Device drivers
Application installers
Windows recovery media
Microsoft 365 components
Administrative tools
Security software

An x64 installer is not necessarily appropriate for an Arm64 computer, although Windows on Arm can emulate many x86 and x64 applications.

Do not use the Windows build number to determine processor architecture. Check System type directly.

Check the Windows Edition Before Reinstalling

Before resetting or reinstalling Windows, record:

Edition
Version
Activation status
System architecture
BitLocker recovery information

Open:

Settings > System > Activation

Confirm whether Windows is activated and whether it uses a digital licence.

When reinstalling, selecting the wrong edition can prevent automatic activation or leave required business features unavailable.

For example, a PC licensed for Windows 11 Home should not be assumed to possess a Windows 11 Pro licence simply because Pro is available in the installer.

Check the Build When a Feature Is Missing

Microsoft frequently introduces Windows features through a combination of:

Feature-update versions
Monthly cumulative updates
Controlled feature rollout
Hardware eligibility
Regional availability
Organisational policy

Therefore, two computers displaying the same broad version can still behave differently.

When comparing them, record:

Edition

Version

Full OS build

Experience Pack

Hardware model

Processor architecture

Update settings

Do not assume a missing feature means Windows Update is broken until the exact requirements and rollout state have been checked.

Compare the Build With Microsoft’s Release Information

Once you know the version and build, compare them with Microsoft’s official:

Windows release-health information
Supported Windows versions
Update-history pages
Known-issues pages

Microsoft maintains release information showing supported Windows client versions, base builds and servicing dates. Its Windows message centre also reports current monthly updates, known problems and release changes.

Avoid relying on an old screenshot, forum answer or third-party “latest build” table. Windows servicing information changes regularly.

What Information Should You Send to IT Support?

For most Windows problems, send:

Computer manufacturer and model:

Windows edition:

Windows version:

Full OS build:

System type:

Problem started:

Recent update or software change:

For example:

Model: Dell Latitude 7450

Edition: Windows 11 Pro

Version: 25H2

OS build: 26200.xxxxx

System type: 64-bit operating system, x64-based processor

Problem began: 29 July 2026

Recent change: Windows cumulative update installed

Include a screenshot of:

winver

when possible.

Do not send a public screenshot containing:

Product keys
BitLocker recovery keys
Email addresses
Internal computer names
Company server names
Usernames that should remain private

Common Mistakes to Avoid

Reporting only “Windows 11”

There are several Windows 11 releases and thousands of cumulative build revisions.

Confusing the edition with the version

Windows 11 Pro is an edition. Windows 11 25H2 is a version.

Ignoring the digits after the build number

The servicing revision helps establish which cumulative update is installed.

Assuming

10.0

means Windows 10

Windows 11 retains the NT 10.0 operating-system property. Use the build and OS name to distinguish it.

Using an online browser-detection website

A website may receive incomplete or generalised platform information. Built-in Windows tools provide a more reliable local result.

Sharing the complete

systeminfo

report publicly

The report contains considerably more than the Windows build. Review it before sharing.

Assuming every PC should be on the same version

Hardware, update safeguards, business policy, servicing channel and edition can affect which supported version a device receives.

A Practical Windows Version Checklist

When you need to identify the installed Windows release:

Press Windows key + R.
Run winver.
Record the version and complete OS build.
Open Settings > System > About.
Record the Windows edition.
Check the system type.
Use msinfo32 when firmware and hardware information are also required.
Use systeminfo for a command-line report.
Use Get-ComputerInfo when PowerShell output is more convenient.
Do not confuse Windows 11’s internal 10.0 value with Windows 10.
Compare the result with Microsoft’s official release information.
Check Windows Update for pending restarts or updates.
Record activation before reinstalling Windows.
Confirm BitLocker recovery access before major changes.
Send the complete details to your IT provider.

How Hamilton Group Can Help

Checking one computer takes only a minute. Checking whether every computer across a business is properly licensed, supported and fully patched requires more than opening winver.

Hamilton Group’s experienced IT team can help with:

Windows Version and Build Auditing

We can identify computers running:

Unsupported Windows releases
Old cumulative builds
Unexpected Windows editions
Insider or preview builds
Incorrect architectures
Failed feature updates

Windows Update Management

Hamilton Group can manage:

Security updates
Feature-update deployment
Update rings
Restart deadlines
Safeguard holds
Failed installations
Update reporting

Microsoft Intune and Endpoint Management

For managed businesses, we can provide central visibility of:

Windows editions
Feature-update versions
OS builds
Encryption state
Hardware models
Compliance
Update status

Compatibility Checks

Before upgrading, we can verify compatibility with:

Business applications
Printers
Specialist hardware
VPN clients
Security tools
Drivers
Microsoft 365
Line-of-business systems

Windows Repair and Upgrades

Where a computer is stuck on an old version or repeatedly fails to update, we can diagnose:

Damaged Windows components
Insufficient storage
Driver conflicts
Firmware requirements
Security software interference
Incompatible hardware
Failed servicing operations

Hamilton Group aims to make first contact on IT support requests within 15 minutes, helping businesses resolve Windows update and compatibility problems promptly.

Know the Exact Windows Release Before Troubleshooting

The fastest method is:

Windows key + R

winver

For a fuller view, open:

Settings > System > About

Record three key details:

Edition

Version

OS build

Those values provide a much clearer picture than simply saying the computer runs Windows 11.

Call 0330 043 0069, book a meeting with one of our experts or visit hgmssp.com for experienced help with Windows versions, updates, compatibility and business device management.

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