Microsoft Activation Scripts v3.12, better known as MAS 3.12, is the latest version of the highly popular open-source activation tool used to permanently or temporarily activate Windows operating systems and Microsoft Office application suites. Released in early July 2026, this update brings several important fixes to the TSforge and HWID methods, as well as improved script security to better resist antivirus detection.
For anyone looking for a way to activate Windows 10, Windows 11, or Office 2016 through Office 2024 without purchasing an official license, MAS v3.12 remains one of the most reliable options available today thanks to its open-source code, tiny file size (only around 400 KB), and extremely low malware detection rates.
What are Microsoft Activation Scripts (MAS)?
Microsoft Activation Scripts is a collection of CMD and PowerShell-based scripts developed by the open-source community under a developer known as massgravel. This tool is specifically designed to activate various Microsoft products using several different methods, ranging from permanent Hardware ID (HWID)-based activation to KMS methods that can be automatically renewed.
Unlike other activation tools such as KMSPico or KMSAuto, which are often distributed as closed binary files, the entire MAS codebase can be audited by anyone due to its open-source nature. This allows users to verify that there is no malicious code, data-stealing functionality, or hidden backdoors embedded inside.
Why Choose MAS v3.12 Over Previous Versions?
Version 3.12 serves as a refinement over MAS 3.1, which was released in May 2025. Below is the Microsoft Activation Scripts v3.12 changelog and the main reasons you should upgrade immediately:
- TSforge Improvements: Now uses KMS4k as the default option for Windows-only activation, replacing the older StaticCID method. KMS4k is considered superior because it persists even after hardware component changes and does not require an internet connection to work.
- HWID Adjustments: Changes were made to the Installation ID used by the HWID method to maintain compatibility with the latest Windows security updates released in mid-2026.
- Hardened Security: The script is now more resistant to various types of exploits and potential security vulnerabilities.
- Custom DLL Feature Removed: Developers removed the ability to load user-provided DLL files for security reasons, meaning only official Microsoft DLLs are permitted.
- Clearer Error Messages: Error notifications displayed when activation fails are now more informative, making troubleshooting easier for beginner users.
Key Features of Microsoft Activation Scripts v3.12
MAS 3.12 is not just an ordinary activation tool. Inside one small package, you get various advanced features rarely found in similar tools. Here are its main capabilities:
1. Multiple Activation Methods in One Tool
You are free to choose the activation method that best suits your needs and the type of Microsoft product you own:
| Activation Method | Supported Products | Duration | Internet Required |
|---|---|---|---|
| HWID (Digital License) | Windows 10, Windows 11 | Permanent | Yes |
| Ohook | Office 2013 – 2024, Visio, Project | Permanent | No |
| TSforge | Windows, ESU, Office, Visio, Project | Permanent | Flexible |
| KMS38 | Windows 10/11, Windows Server | Until the year 2038 | No |
| Online KMS | Windows Vista+, Office 2010+ | 180 Days (Auto Renewal) | Yes |
2. Supports Almost All Windows and Office Versions
With MAS v3.12, you can activate nearly every Microsoft product currently in circulation:
- Operating Systems: Windows 7 SP1, Windows 8.1, Windows 10 (all builds), Windows 11 (all editions), Windows Server 2008 through Server 2022.
- Office Suites: Office 2010, 2013, 2016, 2019, 2021, and Office 2024 LTSC.
- Other Applications: Microsoft Visio and Microsoft Project from version 2010 up to the latest release.
- Architectures: Full support for 32-bit (x86), 64-bit (x64), and ARM64 systems.
3. Highly Useful Additional Features
Beyond activation, MAS also includes various supporting utilities:
- Real-time Windows and Office activation status checker
- Change Windows 10/11/Server editions without reinstalling
- Manual HWID key insertion
$OEM$folder support for pre-activation during Windows installation- Advanced Troubleshoot menu to fix problematic activations
- Reset trial periods and system tampering status
System Requirements to Run MAS 3.12
This tool is extremely lightweight and can run on almost any computer that still supports a Windows operating system. Here are the system requirements for Microsoft Activation Scripts v3.12:
- Operating System: Windows Vista SP1 or later (Windows 7, 8, 8.1, 10, 11)
- Windows Server: Server 2008 or later
- PowerShell: Version 2.0 or later (included by default in Windows)
- Access Rights: Must be run as Administrator
- Storage Space: Minimum 10 MB of free space
- Internet Connection: Required for HWID and Online KMS methods; Ohook and KMS38 work fully offline
💡 Important Note: Specifically for the permanent HWID activation method, make sure your Windows installation is connected to the internet during the process, as the tool needs to communicate with Microsoft's licensing servers.
How to Use Microsoft Activation Scripts v3.12
There are two main ways to run MAS: directly via a PowerShell command (easiest) or by downloading the script file manually. Below is a complete step-by-step guide for both methods.
Method 1: Direct Activation via PowerShell (Recommended)
This is the fastest method since you do not need to download any files to your computer. Simply copy and paste the following command:
- Click the Start Menu, type
PowerShell, then right-click it and select Run as Administrator. - Copy the command below, paste it into the PowerShell window, and press Enter: powershell
irm https://get.activated.win | iex - Wait a few seconds for the script to load and display the main menu.
- You will see several options highlighted in green, which are automatic recommendations matched to your system. Simply type the number corresponding to your needs:
- Press 1 for permanent Windows activation via HWID
- Press 2 for permanent Office activation via Ohook
- Press 3 for KMS38 (valid until 2038)
- Press 4 for Online KMS
- Follow the on-screen instructions until the process finishes, and you see the message "Activation Successful".
What If the PowerShell Command Fails?
Sometimes ISPs or DNS configurations block access to the main domain. If the command above fails, try this alternative command (for Windows 10/11 only):
powershell
iex (curl.exe -s --doh-url https://1.1.1.1/dns-query https://get.activated.win | Out-String)If you still encounter TLS/SSL errors on Windows 8.1 or older Windows 10 builds, run this command first:
powershell
[Net.ServicePointManager]::SecurityProtocol=[Net.SecurityProtocolType]::Tls12Method 2: Download the Offline MAS v3.12 File
If you prefer to run the tool completely offline without an internet connection during activation (for example, when using Ohook or KMS38), follow these steps:
- Download Microsoft Activation Scripts v3.12. Always ensure you obtain the original file from the official developer to avoid malware.
- Extract the downloaded ZIP file using WinRAR or 7-Zip.
- Open the extracted folder, then navigate into the folder named All-In-One-Version.
- Right-click the file MAS_AIO.cmd and select Run as administrator.
- If a SmartScreen warning appears, click More Info > Run Anyway.
- The main MAS menu will appear. Type the number corresponding to your desired activation method, then press Enter.
- Wait for the process to run; it usually takes 10–30 seconds to complete.
How to Choose the Right Activation Method
With so many options available, new users often feel confused about which one to pick. Here is a quick guide to selecting the best activation method in Microsoft Activation Scripts v3.12:
- Choose HWID if you are running Windows 10 or 11, want permanent activation that survives a full format/reinstall, and your computer is always connected to the internet. This is the method that behaves most like a genuine retail license.
- Choose Ohook if: You only need to activate Microsoft Office 2013 or later and want permanent results without requiring any internet connection.
- Choose TSforge if you need to activate Windows ESU (Extended Security Update) for older Windows versions or want a single method capable of handling all products at once.
- Choose KMS38 if you want very long-lasting Windows activation (valid until 2038) without the hassle of periodic renewals, but do not strictly require hardware-tied permanence.
- Choose Online KMS if you're running older Windows versions (7/8) or Office 2010, and do not mind having activation automatically renewed in the background every 180 days.
Is Microsoft Activation Scripts v3.12 Safe to use?
This is the question most frequently asked by users. Here is an objective explanation:
From a Technical Security Perspective
The original MAS release from its official developer is relatively safe because:
- Its entire source code is open and can be audited by anyone
- It contains no suspicious binary files; everything consists of CMD/PowerShell scripts and official Microsoft DLLs
- Antivirus detection rates are extremely low compared to competing activation tools
- Developers regularly release updates to patch security vulnerabilities
However, the biggest risk actually comes from the download source. Many irresponsible parties tamper with MAS, inject viruses, keyloggers, or password stealers, and then redistribute it under the same name. For this reason, always download from the official source.
From a Legal Perspective
Technically, using MAS to activate Microsoft products without purchasing a genuine license violates Microsoft's Terms of Service. This tool is created for educational and testing purposes. Although Microsoft generally does not take legal action against home users, risks remain, especially for business or organizational environments that are subject to software audits.
We recommend purchasing an official license if you use Windows or Office for commercial purposes.
Tips to Fix Common Issues in MAS 3.12
Although extremely stable, sometimes the activation process can fail due to certain system factors. Here are the solutions:
- Blocked by Antivirus: Add the MAS folder to the exclusion list in Windows Defender or your third-party antivirus. When using the PowerShell method, detection rarely occurs.
- HWID Activation Fails: Ensure you have a stable internet connection, no interfering proxy/VPN, and try running the script again. If it still fails, use the Troubleshoot menu (option 6).
- Office Still Shows "Not Activated": Close all Office applications completely, re-run MAS as Administrator, select the Ohook method, then restart your computer afterward.
- PowerShell Command Does Nothing: Make sure you opened PowerShell as Administrator, not under a regular user account.
Conclusion
Microsoft Activation Scripts v3.12 continues to reign as the king of Windows and Office activation tools in 2026. With the latest updates to TSforge and HWID, this tool is more reliable, secure, and compatible with all of Microsoft's most recent system updates than ever before. Its main strengths lie in its transparent open-source nature, the wide variety of activation methods available, and its ease of use even for complete beginners.
Whether you choose the quick PowerShell method or download the offline file for repeated use, always make sure you obtain the genuine version from its official developer to avoid malware risks. Use this tool wisely, primarily for personal and educational purposes.