Utilisation du nouvel Outlook sur Windows pour la messagerie personnelle, le calendrier et la gestion des contacts
Hi Alice,
If you are using Outlook application, make sure your Windows system itself is set to French. You can check this in Settings > Time & Language > Language and confirm that French is the display language.
Then, in Outlook, go to File > Options > Language, and set French as both the display and editing language. Be sure to click “Set as Default” and restart Outlook afterward.
Also, it’s worth checking if Outlook is fully updated. You can do this via File > Office Account > Update Options > Update Now.
If you’ve done all that and it still reverts to English, it might be a sync issue with your Microsoft profile or a bug.