i have a problem with an Installer displaying english buttons in a MessageBox, when german (or japanese, other languages not tested) are chosen as the installers language.

The code is use to reproduce this issue ist as follows:
Name "MUI_ABORTWARNING"
Caption "MUI_ABORTWARNING"
Unicode true
SetCompressor /FINAL /SOLID lzma
OutFile MUI_ABORTWARNING.exe
!include "MUI2.nsh"
!define MUI_ABORTWARNING
!insertmacro MUI_PAGE_WELCOME
!insertmacro MUI_LANGUAGE English
!insertmacro MUI_LANGUAGE German
!insertmacro MUI_LANGUAGE Japanese
Function .onInit
InitPluginsDir
!define MUI_LANGDLL_ALWAYSSHOW
!insertmacro MUI_LANGDLL_DISPLAY
FunctionEnd
Section "TEST"
SectionEnd This only seems to happen on Server OS (tested on 2016, 2012Rs, 2008R2) on Client OS (tested on Win10, Win 8.1) the buttons are correctly displayed in german language.Any ideas where i could look for the solution to this? I thought maybe the Regional Settings affect this, but all settings i found where turned to german, so i tend to rule this out.
As always, any help is appreciated 🙂
[Edit]: NSIS is version 3.01
Thanks a lot
x