Support for Office 2016 and Office 2019 ended on October 14, 2025 and there will be no extension and no extended security updates. Microsoft Support How to Activate Microsoft Office
: Visit the Official Office Setup Page to link a physical product key to your Microsoft account for digital activation. Comparison of Activation Options office-2016-permanent-activator-ultimate-v1-7-2022
Microsoft provides several secure and official ways to activate Office 2016: Support for Office 2016 and Office 2019 ended