--- title: M365 Apps/Office nav_order: 8 prev_url: /appsscriptvariables.html prev_label: Apps Script Variables next_url: /drivers.html next_label: Drivers parent: UI Overview --- # M365 Apps/Office ![1776379074990](image/M365appsoffice/1776379074990.png) FFU Builder uses the Office Deployment Toolkit (ODT) to install Office. In the `.\FFUDevelopment\Apps\Office` folder you'll find two files: * `DownloadFFU.xml` * `DeployFFU.xml` ## DownloadFFU.xml `DownloadFFU.xml` is responsible for the download of Office. It's invoked by `setup.exe /download .\DownloadFFU.xml` during the build process. It defaults to downloading the current channel 64-bit version of Office matching the current OS language to `C:\FFUDevelopment\Apps\Office`. `DownloadFFU.xml` contents: ``` ``` If you want to modify the language, you'll need to change the language ID to the language you wish to download and install. For more information about deploying languages see: [Overview of deploying languages for Microsoft 365 Apps - Microsoft 365 Apps Microsoft Learn](https://learn.microsoft.com/en-us/microsoft-365-apps/deploy/overview-deploying-languages-microsoft-365-apps) ## DeployFFU.xml `DeployFFU.xml` is responsible for customizing the installation of Office. If you don't provide a custom XML, it will default to using what's in `DeployFFU.xml`. The default configuration will install the 64-bit current channel version of Office with Word, Excel, Powerpoint. Below is what's currently in `DeployFFU.xml`: ``` ``` ## Copy Office Configuration XML If you want to include your own custom XML file for office, check **Copy Office Configuration XML** and browse to the location of your custom XML file. The path to your custom Office configuration XML file is stored in the `OfficeConfigXMLFile` parameter. This file gets added to the `.\FFUDevelopment\Apps\Office` folder and is referenced in the `.\FFUDevelopment\Apps\Orchestration\Install-Office.ps1` file. {% include page_nav.html %}