Download the ODT from the official Microsoft Download Center . Create a folder on your drive (e.g., C:\Office2021 ) .
Office LTSC 2021 will receive security and bug fixes until October 13, 2026 . Deploy Office Long Term Service Channel (LTSC) 2021
(Optional) To download the installation files for offline use later, run: setup /download configuration.xml . Download the ODT from the official Microsoft Download Center
To download and install (v16.0.15629.20156), it is recommended to use the official Microsoft Office Deployment Tool (ODT) rather than unofficial third-party .zip files, which may contain security risks . This method ensures you receive the authentic volume-licensed version directly from Microsoft's servers . Step 1: Download the Office Deployment Tool (ODT)
To start the installation, run: setup /configure configuration.xml . Important Details Deploy Office Long Term Service Channel (LTSC) 2021
Choose as the product .
The build mentioned (15629.20156) corresponds to an update from approximately October 2022 . When installing via ODT, Microsoft typically downloads the most recent cumulative update available on the Office CDN, which includes all previous security and quality fixes . Step 1: Download the Office Deployment Tool (ODT)
You can use the Office Customization Tool (OCT) to generate a custom configuration.xml for specific versions . Select architecture .
