When Outlook detects that a received message is in a language other than that in the user’s mailbox’s language, it will ask the user if they want to translate it by showing that option at the top of the message. Users can select to “Never translate” messages from that language. They can also translate specific words or phrases using the context menu.
In this way, Outlook for Windows will act like Outlook for the web, which we rolled out in the summer of 2019 (MC180441).
By doing so, users will keep the existing experience.
If you already made changes that affect Word, Excel, and PowerPoint, you do not need to make additional changes.
Turning off/on the features via Group Policy, will not affect Outlook on the web.
Translator for Outlook add-in: If you previously installed this add-in, it will appear side-by-side with the new features. We encourage you to transition users from the add-in to the new features and uninstall the add-in.