# TSforge

> Activation and evaluation extension utility for Windows Vista through 11

TSforge is an open-source C\# command-line tool that reads and edits the Windows Software Protection Platform physical store. It enables local license management, evaluation timer resets, and offline activation without injecting system binaries or maintaining background network connections.

Website: https://github.com/massgravel/TSforge

## What it is for

- Extend Windows evaluation periods by resetting grace timers and rearm counters
- Activate Extended Security Updates (ESU) addons on legacy Windows versions
- Dump, decrypt, and inspect Windows physical licensing store files
- Configure offline KMS and AVMA activation for local virtual machines

## Features

- Offline KMS4k and AVMA4k activation methods
- ZeroCID activation for phone-activatable Windows editions
- Trusted physical store dump, decrypt, load, and re-encrypt options
- Evaluation period and rearm counter resets
- Tamper state removal for corrupted or modified stores
- Installation ID (IID) parameter configuration independent of installed keys

## Pricing

Open source. Free and open source under GPL-3.0

## Details

- Type: GitHub repo
- Category: [Development](https://xiry.app/topics/development.md)
- Open source: yes
- Platforms: Windows, Command line
- For: System administrators, reverse engineers, and legacy Windows maintainers
- Alternative to: Microsoft Activation Scripts
- Tags: windows, licensing, cli, csharp, spp, open source

## Why it was saved

- [@remy.engineering, 10 September 2026](https://www.instagram.com/reel/DdHF6x-IpfH/): Enables activating Microsoft Windows and Office suites without paying for ongoing subscriptions.

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Updated 3 October 2026. Page: https://xiry.app/resources/tsforge

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