reg delete HKLM\SYSTEM\CurrentControlSet\Control\Nls\Language /v InstallLanguage /f reg delete HKLM\SYSTEM\CurrentControlSet\Control\Nls\Language /v Default /f reg add HKLM\SYSTEM\CurrentControlSet\Control\Nls\Language /v InstallLanguage /t REG_SZ /d 0415 /f reg add HKLM\SYSTEM\CurrentControlSet\Control\Nls\Language /v Default /t REG_SZ /d 1045 /f powershell.exe Set-WinUILanguageOverride -Language pl-pl powershell.exe Set-WinUserLanguageList pl-pl -Force pause