If you already own a product key or have it linked to your account, follow these steps from the official Microsoft Support guide :
: Support for Office 2019 ended on October 14, 2025 . While the apps still work, Microsoft warns that they no longer receive security updates, which could expose your device to harmful security risks . If you already own a product key or
Download and install or reinstall Office 2021, Office 2019, or Office 2016 * Microsoft Support : The installer will download
Sign in to download Office * Go to your Microsoft account dashboard, and if you're not already signed in, select Sign in. * Microsoft Support Activation Once installed, open any app like Word or Excel
: The installer will download the remaining files. Stay connected to the internet until you see "You're all set! Office is installed now." 3. Activation Once installed, open any app like Word or Excel .
: Uninstall any older versions of Office to prevent installation conflicts. 2. Official Download & Installation Steps
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