Hello everyone, I programmed the following Windows application with MS Visual Studio 2019: SDI, MFC, 32 bit, deusch This Windows application works without problems on these operating systems: - Windows 10 Pro, 1903, 64 bit, German - Windows Server 2008 R2 Standard, Service Pack 1, 64 bit, English Now this Windows application is also supposed to run under the additional operating system: - Windows Server 2012 R2 Standard, 64 bit, English Under the additional operating system Windows Server 2012 R2 Standard, I get this error message when starting the program: -------------------------------------------------- ------------------------------------------ Problem signature: Problem Event Name: APPCRASH Application Name: GenWA.exe Application Version: 2019.17.0.0 Application timestamp: 5dad578d Fault Module Name: StackHash_a7f0 Fault Module Version: 6.3.9600.18895 Fault Module Timestamp: 5a4b127e Exception Code: c0000374 Exception Offset: PCH_7A_FROM_ntdll + 0x0003C8AC OS version: 6.3.9600.2.0.0.272.7 Locale ID: 1031 Additional Information 1: a7f0 Additional Information 2: a7f0d3cd495f47502742ce0f161c063f Additional Information 3: 4947 Additional Information 4: 4947c81de6d387b78b685b2fb45f6f7f Read our privacy statement online: http://go.microsoft.com/fwlink/?linkid=280262 If the online privacy statement is not available, please read our privacy statement offline: erofflps.txt \ Windows \ system32 \ en-US \: C -------------------------------------------------- ------------------------------------------ The event viewer still has this information: -------------------------------------------------- ------------------------------------------ Faulting application name: GenWA.exe, version: 2019.17.0.0, time stamp: 0x5dad578d Faulting module name: ntdll.dll, version: 6.3.9600.18895, time stamp: 0x5a4b127e Exception code: 0xc0000374 Fault offset: 0x000e6214 Faulting process id: 0xba4 Faulting application start time: 0x01d58a45bfa5d111 Faulting application path: C: \ Program Files (x86) \ S ... H \ GenerationWorkshop order \ GenWA.exe Faulting module path: C: \ Windows \ SYSTEM32 \ ntdll.dll Report Id: fd6a338d-f638-11e9-80d1-005056928633 Faulting package full name: Faulting package-relative application ID: -------------------------------------------------- ------------------------------------------ To create the setup, this is selected in InstallShield Express 2019: 1.) Redistributabables - Visual C ++ 14.0 MFC (x86) - Visual C ++ 14.0 CRT (x86) 2.) Project Assistant / specific operating systems: - Windows Server 2019/2016/2012 R2 - Windows 10 / Windows 8.1 - Windows Server 2008 R2 - Windows 7 What else do I need to do in InstallShield Express 2019 to make my windows application work under the Windows Server 2012 R2 Standard operating system without the above error? Thanks in advance and best regards Bernd Föry