Windows 10 Pro 21H1 19043.1081 x64 MPB Pure Pre-Activated includes a comprehensive suite of security features designed to protect users' data and devices. These features encompass Windows Defender Antivirus, Firewall, and advanced threat protection mechanisms. Additionally, this version supports business-oriented functionalities such as BitLocker, which provides full disk encryption, and Windows Information Protection, which helps protect company data across multiple devices.