Microsoft windows 10 image won't change the default language

Hi,

I deployed a session host in a existing host pool.

I used a MS Windows image to proceed. By default, the image is in English. I'd like to change the display language and regional settings. To do so, I download the desired language and I'm requested to loggo the session.

When I log back in, the language is still in English.

Any clue?

Thanks.

D.