To recap:
Once the download is complete, restart the game to apply the changes. Open My games & apps and select See all . Download Modern Warfare 3 English Language Pack
: Select the game, click the Gear Icon next to the Play button, and choose Modify Install . Under the "Languages" section, check English and click "Confirm" to start the update. Manual Installation (Legacy/Custom Versions) To recap: Once the download is complete, restart