fatal error LNK1112: module machine type ‘x64’ conflicts with target machine type ‘X86’

I wrote a blog entry about this, as I encountered this maddening problem, and finally yanked my system back into working order.

These are the things to check, in this order:

  1. Check your properties options in your linker settings at: Properties > Configuration Properties > Linker > Advanced > Target Machine. Select MachineX64 if you are targeting a 64 bit build, or MachineX86 if you are making a 32 bit build.
  2. Select Build > Configuration Manager from the main menu in visual studio. Make sure your project has the correct platform specified. It is possible for the IDE to be set to build x64 but an individual project in the solution can be set to target win32. So yeah, visual studio leaves a lot of rope to hang yourself, but that’s life.
  3. Check your library files that they really are of the type of platform are targeting. This can be used by using dumpbin.exe which is in your visual studio VC\bin directory. use the -headers option to dump all your functions. Look for the machine entry for each function. it should include x64 if it’s a 64 bit build.
  4. In visual studio, select Tools > Options from the main menu. select Projects and Solutions > VC++ Directories. Select x64 from the Platform dropdown. Make sure that the first entry is: $(VCInstallDir)\bin\x86_amd64 followed by $(VCInstallDir)\bin.

Once I did step 4 everything worked again for me. The thing was I was encountering this problem on all my projects where I wanted to compile towards a 64 bit target.

Related Posts:

  1. How to install Visual C++ Build tools?
  2. How do I clear a C++ array?
  3. Visual C++ find line causing “Debug Assertion failed”
  4. How to determine if a string is a number with C++?
  5. How to keep the console window open in Visual C++?
  6. Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)
  7. Unresolved external symbol in object files
  8. Unresolved external symbol in object files
  9. How to use _CRT_SECURE_NO_WARNINGS
  10. What is C# equivalent of in C++?
  11. What is “stdafx.h” used for in Visual Studio?
  12. Windows 7 exception code: 0xc0000409
  13. Difference between ‘strcpy’ and ‘strcpy_s’?
  14. Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)
  15. VC++ fatal error LNK1168: cannot open filename.exe for writing
  16. Exception Error c0000005 in VC++
  17. Visual Studio debugger error: Unable to start program Specified file cannot be found
  18. ERROR: Cannot open source file ” “
  19. Identifier is undefined
  20. Why does fatal error “LNK1104: cannot open file ‘C:\Program.obj'” occur when I compile a C++ project in Visual Studio?
  21. VC++ fatal error LNK1168: cannot open filename.exe for writing
  22. Visual C++ executable and missing MSVCR100d.dll
  23. LINK : fatal error LNK1561: entry point must be defined ERROR IN VC++
  24. “function already has a body”
  25. LINK : fatal error LNK1561: entry point must be defined ERROR IN VC++
  26. Win32 Console Application
  27. https://stackoverflow.com/questions/3865946/error-generic-array-creation
  28. C++ Compiler Error C2280 “attempting to reference a deleted function” in Visual Studio 2013 and 2015
  29. error C2601: ‘main’ : local function definitions are illegall – MS VS 2013 Compiler
  30. cin.eof() functionality
  31. LINK : fatal error LNK1561: entry point must be defined ERROR IN VC++
  32. error LNK2019: unresolved external symbol “” referenced in function
  33. Visual Studio compiles but the exe isn’t there
  34. LPCSTR, LPCTSTR and LPTSTR
  35. error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup
  36. Download c++ in existing visual studio 2017
  37. module unsafe for SAFESEH image C++
  38. Unexpected end of file error
  39. What is between ESP and EBP?

Leave a Comment