🛠️ How to Remove Microsoft Activation Script and Go Back to an Official Windows or Office License

Microsoft Activation Scripts

🔍 What Is Microsoft Activation Script by Massgravel (MAS) and Why People Use It

Microsoft Activation Script (often called MAS) is a small tool made by a developer known as Massgravel. It’s used to activate Windows 10, Windows 11, and Microsoft Office without a license key.
It works by using things like HWID (digital license tied to your hardware) or KMS38 (a local license trick for testing).

Many users choose this tool for educational purposes, testing, or just to try out Windows and Office before buying.

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❌ Why You Might Want to Delete the Activation Script from Your PC

Using MAS might not be a forever solution. Some reasons to remove it:

  • You bought a genuine Windows or Office key
  • You want to return your laptop to factory state
  • Your antivirus shows warnings about activators
  • You no longer need test or trial tools on your system

🧹 How to Clean MAS Activation from Your System

🔧 If You Used HWID

HWID links your license to your motherboard. It’s hard to fully remove, but you can still:

  1. Run Command Prompt as Administrator
  2. Type: bashCopyEditslmgr /upk
  3. Then: bashCopyEditslmgr /cpky
  4. Restart your computer
  5. Check your activation status in Settings > Activation

Sometimes the only way to reset is by reinstalling Windows or entering a new product key.

🔧 If You Used KMS Activation

This is easier to undo:

Microsoft Activation Scripts
  1. Open Command Prompt (Admin)
  2. Use this command: bashCopyEditslmgr /upk
  3. For Office, go to the Office install folder

This removes KMS info and lets you activate officially again.

🔁 How to Get a Genuine License After Using the Script

If you now have a real product key for Windows or Office, here’s how to use it:

  1. Go to Settings > Activation > Change product key
  2. Enter your new code

Done. You’ve switched from a script to a real Microsoft license.

📥 How to Download and Install Microsoft Activation Script Without Breaking Anything

There are many fake versions online. The safest way is to use a clean MAS version from this website.

How to install it safely:

  1. Download the file (should be called microsoft-activation-scripts-master.zip)
  2. Unpack it with 7-Zip or WinRAR
  3. Turn off antivirus for a moment — some tools flag MAS even if it’s safe
  4. Right-click on MAS_AIO.cmd → Run as Administrator
  5. Choose the method: HWID, KMS38, or Online KMS
  6. That’s it — Windows or Office will be activated

🔒 Why Download Microsoft Activation Scripts From This Website and Not Random GitHub Forks

It’s tempting to grab MAS from Reddit or GitHub clones — but that can be risky. Some versions have spyware or altered code.

Here’s why this site is better:

  • ✅ Files are scanned and confirmed safe
  • 📦 No junkware or ads bundled inside
  • 📅 Always the latest version from Massgravel’s real GitHub
  • 📚 We explain how everything works — not just “click here”
  • 🔍 Transparent: you can check hash sums and code manually
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