Outlook is in a foreign language - need english

Hi, I'm John!

To help narrow down the issue:

1. Is it possible that your account has been hacked? Do you remember receiving any security alert before this happened?
2. Do you currently have full access to your Outlook account (you can sign in normally and see your inbox and settings)?

Just to double-check, please check your language settings under the "Your Info" page:

• Visit: https://account.microsoft.com/profile/msa-language-settings and sign in with your Microsoft account.
• This will open the "Your language settings" page.
• From there, edit both your Display Language and Preferred Language.
• Let me know how it goes.

Also, just to be safe, I’d recommend to sign out everywhere:

• Visit: https://account.live.com/proofs/manage/additional Scroll down to Sign me out and select "Sign me out".
• After signing out everywhere, please monitor if the issue persists in the coming hours.

Click "Add comment" to let me know.

Regards,

John J.D.

For Outlook apps, the display language is controlled by the device or by the language selected at install time.

For classic Outlook on Windows installed via the standalone download, install it in English as follows:

1. Go to the “Install or reinstall classic Outlook on a Windows PC” page.
2. In the Select a language and download classic Outlook section, open the language dropdown.
3. Choose English (United States) or English (United Kingdom).
4. Select Download and follow the prompts to complete installation.

If classic Outlook was previously installed in another language via the standalone link, reinstalling it with English selected in the dropdown will give an English UI.

On mobile (Outlook for Android or iOS), Outlook uses the device language. To get English in the app, change the phone’s system language to English (US or UK); Outlook will detect and use it automatically.

If Windows itself is in a foreign language, change the Windows display language to English in Settings → Time & language → Language & region → Windows display language and then restart; Outlook will follow the OS language.

References:

• Classic Outlook display language is English only when installed via standalone download
• Install or reinstall classic Outlook on a Windows PC
• In which languages is your app translated?
• change language - Microsoft Q&A