For Windows Server 2019
This article explains how to configure a new Windows display language.
When you install Windows Server 2019, English is set as default display language. You can add other display languages at any time.
To configure a new Windows display language, proceed as follows:
Create a Remote Desktop connection to your server and log in to the server as an administrator.
Click Start, then click Settings.
Select Time & Language.
In the left bar, click Language.
Click Add a language.
In the Choose a language to install field, enter the desired language and then select it.
The language you chose is now installed. It will be displayed in the overview and automatically selected as the Windows display language next time you log in.