What is HEU KMS Activator?

HEU KMS Activator is a free portable utility that activates supported editions of Windows and Microsoft Office using digital license, KMS38, OEM or KMS methods.

Is HEU KMS Activator free?

Yes. The tool is free to download, and official builds are published on the zbezj GitHub repository.

Which Windows and Office versions are supported?

Supported targets include Windows 7, 8, 8.1, 10, 11 and Windows Server editions, plus Office 2010, 2013, 2016, 2019, 2021, 2024 and Microsoft 365.

What is Smart Activation?

Smart Activation checks the installed Windows and Office editions and chooses the best available method, preferring digital license, then OEM, TSForge, KMS38 and finally KMS.

Does HEU KMS Activator need an internet connection?

Some modes work offline, including KMS38 and OEM activation. Digital license and online KMS activation may require a connection.

Why does Microsoft Defender flag HEU KMS Activator?

Activation tools are commonly detected as potentially unwanted software because they modify licensing components. Verify the SHA-256 hash from the official GitHub release before running any build.

How do I verify the download?

Compare the file hash with the MD5, SHA-1 and SHA-256 values published in the release notes on GitHub. Do not run a file whose hash does not match.

What should I do if activation fails?

Make sure you are running the tool as administrator, close Office applications, check that the Windows or Office edition is supported, and try the dedicated activation mode for that product.

HEU KMS Activator

中文

One .exe. Smart activation for Windows and Office. Free utility.

Page updated: November 6, 2026

Activate Windows and Office with HEU KMS Activator

Name: HEU KMS Activator
Author: 知彼而知己 (zbezj)

HEU KMS Activator is a free, portable activation utility for Windows and Microsoft Office, developed by 知彼而知己 (zbezj). Version 64.0.0 combines digital license, KMS38, OEM and KMS activation in one interface, with a Smart Activation mode that checks the installed products and picks the best available method. There is nothing to install; the tool runs from a single executable. Questions are answered in the FAQ, and the usage steps take about two minutes.

Quick facts

Developer: 知彼而知己 (zbezj)
Latest version: 64.0.0, released July 6, 2026
Platforms: Windows 7–11 and Windows Server
Office: 2010–2024 and Microsoft 365
Methods: Digital License, OEM, TSForge, KMS38, KMS
Official repository: GitHub

Download

Download HEU KMS Activator 64.0.0
HEU_v64.0.0.zip · 62 MB ZIP · 85 MB extracted · Windows 7–11 / Server · All versions

Only trust this page and the official GitHub release. Activation tools are widely repacked and redistributed. The release notes publish MD5, SHA-1 and SHA-256 hashes — verify them before running any file. The official repository is github.com/zbezj/HEU_KMS_Activator.

Usage

Download HEU_KMS_Activator_v64.0.0.exe from the downloads page and compare its SHA-256 hash with the value in the GitHub release notes.
Right-click the file and choose Run as administrator. Windows will show a UAC prompt; accept it.
Close Microsoft Office completely, including Word, Excel and Outlook, before activating Office.
Click Smart Activation and wait. The tool checks the installed Windows and Office editions and selects the highest-priority method available.
Restart Windows or Office and check the activation status in Settings → System → Activation or Office Account.

If you need a specific method, open the dedicated tab for Digital License, KMS38, OEM or KMS instead of Smart Activation. Some modes work offline; digital license and online KMS may need a network connection.

What it supports

HEU KMS Activator targets supported editions of Windows and Microsoft Office, including:

Windows: 7, 8, 8.1, 10, 11 and Windows Server editions.
Office: 2010, 2013, 2016, 2019, 2021, 2024 and Microsoft 365.
Methods: Digital License/HWID, KMS38, OEM, KMS; Office TSForge, Ohook and KMS.
Management: install or remove product keys, view license status, back up and restore activation, and convert some editions.

What you need

What	Details
Windows	Windows 7 or later, 32-bit or 64-bit; Windows Server editions are also supported
Rights	Administrator account
Office	Optional; supported Office versions listed above
Network	Optional; some activation modes work offline
Antivirus	Activation tools are often flagged; verify the hash before adding any exclusion

FAQ

What is HEU KMS Activator?: It is a free portable utility that activates supported Windows and Office editions using digital license, KMS38, OEM or KMS methods.
Is HEU KMS Activator free?: Yes. The tool is free to download, and official builds are published on the zbezj GitHub repository.
Which Windows and Office versions are supported?: Windows 7, 8, 8.1, 10, 11 and Server editions, plus Office 2010, 2013, 2016, 2019, 2021, 2024 and Microsoft 365. Exact support depends on the edition and build.
What is Smart Activation?: It checks the installed products and chooses the best available method, preferring digital license, then OEM, TSForge, KMS38 and finally KMS.
Does it need an internet connection?: Not always. KMS38 and OEM modes can work offline. Digital license and online KMS activation may require a connection.
Why does Microsoft Defender flag it?: Activation tools modify licensing components, so security products commonly classify them as potentially unwanted software. Verify the SHA-256 hash from the official release before running the file.
How do I verify the download?: Compare the file hash with the MD5, SHA-1 and SHA-256 values in the GitHub release notes. The SHA-256 for v64.0.0 is listed on the downloads page.
What if activation fails?: Run the tool as administrator, close Office, confirm the edition is supported, and try the dedicated activation mode for that product. If it still fails, check the release notes for known issues.

Changelog

64.0.0 (July 6, 2026)

Updated the digital license IID after the old IID expired.
Fixed an empty phone-activation ID dialog on some systems.

63.3.4 (April 21, 2026)

Improved the activation service restart to avoid pipe-blocking hangs.

63.2.0 (August 18, 2025)

Added support for Windows evaluation editions with a 90-day reset.
Fixed Smart Activation starting the KMS server unnecessarily.

63.0.0 (June 11, 2025)

Maintenance release with activation fixes.

62.0.0 (May 12, 2025)

OHook added OSPP support for Office on Windows XP and later.
Adjusted the classic interface and fixed Office permanent-activation detection.

Older builds and full release notes are on the GitHub releases page.

Disclaimer

HEU KMS Activator is published here for educational and archival purposes. Activating commercial software without a license can violate the Microsoft licensing terms and the law where you live. Use it at your own risk. The official builds and hashes are published in the zbezj GitHub repository.