Fatal error No Target Architecture in Visual Studio

Question

When I try to compile my c   project using Visual Studio 2010 in either Win32 or x64 mode I get the following error    gt C  Program Files  x86  Microsoft SDKs Windows v7 0A include winnt h 135   fatal error C1189   error     No Target Architecture   My preprocessor definitions say WIN32  DEBUG  CONSOLE   PreprocessorDefinitions   What is causing this error and how do I fix it      winnt h  lines 127-136  MSVS says this is an inactive preprocessor block  if defined  WIN64    if defined  AMD64    define PROBE ALIGNMENT   s   TYPE ALIGNMENT  DWORD    elif defined  IA64    define PROBE ALIGNMENT   s    TYPE ALIGNMENT   s    gt  TYPE ALIGNMENT  DWORD                                     TYPE ALIGNMENT   s     TYPE ALIGNMENT  DWORD     else  error  No Target Architecture   endif   Update  I created a new msvs project and copied my code to it  I no longer have error    No Target Architecture   but now I have a bunch of compile errors involving winnt h and winbase h and no compile errors involving any of my files  Is it possible these files are corrupted  Do I need to reinstall MSVS 2010   Update 2  So I narrowed down my problem and found that it is  include  lt WinDef h gt  that is causing all of my compile errors with winnt h but I still don t know how to fix it

User · Answer

Another cause of this can be including a header that depends on windows.h, before including windows.h.

In my case I included xinput.h before windows.h and got this error. Swapping the order solved the problem.

User · Answer

If you are using Resharper make sure it does not add the wrong header for you  very common cases with ReSharper are    include  lt consoleapi2 h  include  lt apiquery2 h gt   include  lt fileapi h gt   UPDATE  Another suggestion is to check if you are including a  quot partial Windows h quot   what I mean is that if you include for example winbase h or minwindef h you may end up with that error  add  quot the big quot  Windows h instead  There are also some less obvious cases that I went through  the most notable was when I only included synchapi h  the docs clearly state that is the header to be included for some functions like AcquireSRWLockShared but it triggered the No target architecture  the fix was to remove the synchapi h and include  quot the big quot  Windows h  The Windows h is huge  it defines macros many of them remove the No target arch error  and includes many other headers  In summary  always check if you are including some header that could be replaced by Windows h because it is not unusual to include a header that relies on some constants that are defined by Windows h  so if you fail to include this header your compilation may fail

User · Answer

I had a similar problem  In my case  I had accidentally included winuser h before windows h  actually  a buggy IDE extension had added it   Removing the winuser h solved the problem

User · Answer

It would seem that  AMD64  is not defined  since I can t imagine you are compiling for Itanium   IA64

User · Answer

Solve it by placing the following include files and definition first    define WIN32 LEAN AND MEAN         Exclude rarely-used stuff from Windows headers   include  lt windows h gt

User · Answer

Use  include  lt windows h gt  instead of  include  lt windef h gt    From the windows h wikipedia page      There are a number of child header files that are automatically included with windows h  Many of these files cannot simply be included by themselves  they are not self-contained   because of dependencies    windef h is one of the files automatically included with windows h

User · Answer

WIN32 identifier is not defined   use  include  lt SDKDDKVer h gt   MSVS generated projects wrap this include by generating a local  targetver h which is included by  stdafx h  that is comiled into a precompiled-header through  stdafx cpp    EDIT   do you have a  D  WIN32  on your commandline

User · Answer

Besides causes described already  I received this error because I d include    include  lt fileapi h gt    Apparently it was not needed  despite of CreateDirectoryW call   After commenting out  compiler was happy  Very strange

User · Answer

If you are building 32bit then make sure you don t have  WIN64 defined for your project

User · Answer

At the beginning of the file you are compiling  before any include  try to put ONE of these lines   define  X86   define  AMD64   define  ARM    Choose the appropriate  only one  depending on your architecture

User · Answer

Another reason for the error  amongst many others that cropped up when changing the target build of a Win32 project to X64  was not having the C   64 bit compilers installed as noted at the top of this page   Further to philipvr s comment on child headers   in my case  an explicit include of winnt h being unnecessary when windows h was being used

[c++] Fatal error: "No Target Architecture" in Visual Studio

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