Blog Office 2024/2021 LTSC Professional Plus Key Activation Guide Posted by Kuwar Pal February 25, 2026 On February 25, 2026 0 1. Download and install the official deployment tool to install the correct office program.Download address:Office Tool Plus v10.18.11.0 (X64).zip 2. Add the language you need, such as English. 3. Enter the key you purchased and the activation is complete.