Add the MTK folder to your antivirus exclusion list to prevent automatic deletion.
Microsoft Toolkit 2.5.2 (often updated to version 2.6.4) is a widely known third-party utility used to bypass standard activation for Microsoft Windows and Office products. It functions by emulating a Key Management Service (KMS) server on a local machine to trick the software into appearing legitimately licensed. Key Features and Compatibility microsoft toolkit 252 activator 4 windows and office best
Once successfully applied, the activation is intended to be permanent, remaining valid unless the operating system is completely uninstalled. Add the MTK folder to your antivirus exclusion