If your Outlook emails are not displaying in the correct language, there are a few steps to take:

1. Check your format settings on your machine. Ensure that they are set to the correct language and encoding.
2. Verify that the emails don’t have encoding errors in the body or header. If so, you may be able to click a link within the email to reverify the encoding.
3. Re-install the language packs onto your computer, particularly the language pack that corresponds to the email being received.