• Landmark project

  186,272 stars

• Battle-tested

  6 years of history

• Top 10% tracked

  Rank 27 of 1058

Microsoft Activation Scripts (MAS) is a comprehensive, open-source toolset designed to activate Microsoft Windows and Office products. It integrates several sophisticated activation methods including HWID, Ohook, TSforge, and Online KMS into a single, cohesive script. The tool automates the process of generating valid digital licenses or utilizing KMS servers without requiring third-party executables or malware-laden cracks. It provides a clean, command-line interface that guides users through the activation process safely. Additionally, MAS includes advanced troubleshooting tools to resolve complex activation errors or lingering issues from previous, unofficial activation attempts.

This tool is for system administrators, IT professionals, and general power users who need a clean, verifiable method to activate Microsoft products. It is particularly valued by those who want to avoid the severe security risks associated with traditional, closed-source activators.

• Multiple activation methods: Supports HWID for permanent Windows activation, Ohook for Office, and Online KMS for older versions.
• Open-source transparency: The entire script is open-source, allowing users to verify that no malicious code is executed.
• Zero third-party executables: Operates entirely using native Windows command-line tools and PowerShell, minimizing security risks.
• Advanced troubleshooting: Includes built-in utilities to clean up old KMS configurations, fix registry issues, and resolve common activation errors.
• Extended Security Updates: Provides methods to enable ESU for unsupported operating systems to continue receiving critical patches.

Getting started: irm https://massgrave.dev/get | iex

1. v3.12 8 Years of MAS3.12Jul 4, 2026

   ## Changelog: 3.12 #### TSforge - Now defaults to KMS4k for the Windows-only option instead of StaticCID as it's better for most users. - KMS4k persists through hardware changes and does not require an internet connection to work, unlike StaticCID. - See [this page](https://massgrave.dev/chart) for more details on the differences between TSforge methods. #### HWID - Changed the Installation ID used by HWID. #### All - Hardened the script against certain types of vulnerabilities. - Removed the functionality for using user-provided DLLs instead of the ones included with the script. - Made some error messages clearer. ---- ## Download / How to use it? https://github.com/massgravel/Microsoft-Activation-Scripts?tab=readme-ov-file#download--how-to-use-it ## Don't download from the below Source code (zip) link. Check the above link for the info.

2. v3.11 Minor Update3.11May 2, 2026

   ## Changelog: 3.11 #### Change Office Edition - Added OutlookForWindows in app selection menu, thanks to @WindowsAddict #### TSforge - Added support for Server 2012 Year 4 and Year 5 ESU licenses - Added support for Windows 10 LTSB 2016 ESU licenses ---- ## Download / How to use it? https://github.com/massgravel/Microsoft-Activation-Scripts?tab=readme-ov-file#download--how-to-use-it ## Don't download from the below Source code (zip) link. Check the above link for the info.

3. v3.10 Minor Update3.10Jan 28, 2026

   ## Changelog: 3.10 #### Ohook - Now warns the user if Smart App Control is enabled or in evaluation mode, as this has been reported to cause issues with Ohook. #### TSforge - Add support for Server 2016 ESU licenses. #### All - Add a suggestion to perform an in-place repair if license package files are missing. - Remove newlines before blue suggestion lines. ---- ## Download / How to use it? https://github.com/massgravel/Microsoft-Activation-Scripts?tab=readme-ov-file#download--how-to-use-it ## Don't download from the below Source code (zip) link. Check the above link for the info.

4. v3.9 Minor Update3.9Nov 18, 2025

   ## Changelog: 3.9 #### TSforge - Fixed an issue where IoT ESU licenses were not working (a bug from Microsoft) for the IoTEnterprise edition. The script will use the Client ESU license instead. #### Change Office Edition - Removed the deprecated Semi Annual Preview channel from the change update channel option. #### Online KMS - The script will no longer automatically change IoTEnterprise editions to Enterprise for KMS activation. ---- ## Download / How to use it? https://github.com/massgravel/Microsoft-Activation-Scripts?tab=readme-ov-file#download--how-to-use-it ## Don't download from the below Source code (zip) link. Check the above link for the info.

5. v3.8 R.I.P. KMS383.8Nov 11, 2025

   ## Changelog: 3.8 #### HWID - Activation support is added for the WNC edition. #### KMS38 - Beginning with build **26100.7019**, Microsoft fully deprecated clip-based KMS license migration functionality. As a result, KMS38 has stopped working. [Detailed info](https://massgrave.dev/kms38). - KMS38 has now been removed from the MAS script. Users are advised to use HWID or TSforge activation instead. - If you still wish to use it on older Windows versions or keep it for archival purposes, you can download the script from [here](https://github.com/massgravel/Microsoft-Activation-Scripts/blob/ab6b572af940fa0ea4255b327eb6f69a274d6725/MAS/Separate-Files-Version/Activators/KMS38_Activation.cmd). #### TSforge - From build 26100.7019, Windows will always display and **stay** at the 180-day remaining KMS grace period if the actual period is longer. KMS4k info is updated as per this change. - Added ESU support for PPIPro (added in 19045.6388). - Fixed an issue in filtering where ESU IDs were not showing in the manual option. - Added a command to refresh the ESU status. #### Change Windows Edition - Changed key preference order so that the HWID key can be installed. Thanks

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