Set the operating system language on your devices
The following commands will set the language as en-US (409) on your devices :
Note : The differents language code number are easily found on intternet
A ) Installed language : reg add "HKLM\SYSTEM\CurrentControlSet\Control\Nls\Language" /v InstallLanguage /t REG_SZ /d 409 /f
B ) Default language : reg add "HKLM\SYSTEM\CurrentControlSet\Control\Nls\Language" /v Default /t REG_SZ /d 409 /f