Known as the KMS38 Activator, this open-source tool was created by a group called Massgrave, where MAS stands for Microsoft Activation Scripts.

KMS38 Activator gained popularity as one of the easiest and safest ways to activate Windows and Office without any cost. It allowed users to enjoy all official updates just like a genuine licensed copy.

With its straightforward approach and reliable performance, the tool became a go-to solution for many looking to activate their Microsoft products seamlessly.
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