If you don’t own a Windows 11-compatible computer, or simply don’t want to upgrade to that shitty, ad-ridden, spyware of an OS, Massgrave is the way to go. It’s an open-source interactive Batch script that lets you enable ESU on a Windows 10 computer, for free, no Microsoft account required. Here’s how it looks like at the time of writing. TL;DR, use the TSforge option in Massgrave.
Massgrave provides this PowerShell one-liner that runs the script after performing some checks. Make sure you are up to date, it might fail otherwise.
irm https://get.activated.win | iex
https://get.activated.win contains the PowerShell code that performs those check. irm is short for Invoke-RestMethod, which downloads the script. iex is short for Invoke-Expression, which runs the script.
The actual Batch script is available at multiple location stored in the URLs array. The preliminary PowerShell script randomly selects a location to download it from and run it.
$URLs = @(
'https://raw.githubusercontent.com/massgravel/Microsoft-Activation-Scripts/ab6b572af940fa0ea4255b327eb6f69a274d6725/MAS/All-In-One-Version-KL/MAS_AIO.cmd',
'https://dev.azure.com/massgrave/Microsoft-Activation-Scripts/_apis/git/repositories/Microsoft-Activation-Scripts/items?path=/MAS/All-In-One-Version-KL/MAS_AIO.cmd&versionType=Commit&version=ab6b572af940fa0ea4255b327eb6f69a274d6725',
'https://git.activated.win/massgrave/Microsoft-Activation-Scripts/raw/commit/ab6b572af940fa0ea4255b327eb6f69a274d6725/MAS/All-In-One-Version-KL/MAS_AIO.cmd'
)
The long string ab6b572af940fa0ea4255b327eb6f69a274d6725 is the commit hash where it originates from.
The script is very big. Massgrave provides a breakdown on GitHub. I frankly didn’t dive deeper into the code. I just know it’s trusted by countless people, and my locally-running LLM as well as Mistral AI didn’t find anything suspicious (except for the fact that it bypasses official activation channels…).
To enable ESU, choose option 3, TSforge:

The process can take a few minutes. You’ll know it’s done when it tells you to press a key to return to the main menu. It’s that easy! No e-waste and money saved.
Note: According to Next, formerly Next INpact, European users can benefit from ESU by logging in with a Microsoft account. But that “solution” is obviously a privacy nightmare. Maybe it’s a good time to switch to…
█████ ███
░░███ ░░░
░███ ████ ████████ █████ ████ █████ █████
░███ ░░███ ░░███░░███ ░░███ ░███ ░░███ ░░███
░███ ░███ ░███ ░███ ░███ ░███ ░░░█████░
░███ █ ░███ ░███ ░███ ░███ ░███ ███░░░███
███████████ █████ ████ █████ ░░████████ █████ █████
░░░░░░░░░░░ ░░░░░ ░░░░ ░░░░░ ░░░░░░░░ ░░░░░ ░░░░░ (?)