x86 application gives INVALID_IMAGE_FORMAT (0xc000007b) error on Windows 7 64 bit

Question

Hi

I have a 32 bit Delphi application which uses a 32 bit .NET application made in c/c++ to convert some files to its native format using .NET c# assemblies compiled with framework 3.5. I ported the .NET c\c++ application and c# 3.5 assemblies to framework 4.0. Now when I try to run the c/c++ application it gives the following message

 

The application was unable to start correctly (0xc000007b). Click OK to close the application. 

please suggest a solution

 

Delphi Application 

• Built using Delphi 7
• 32 bit

.NET application

• Framework 4.0
• Visual Studio 2010 ultimate
• Windows XP 32 bit SP3
• Target machine : Windows 7 64 bit clean install

---

Bimal

Answer 1

This issue usually caused by loading an x86 (x64) dependency from a x64 (x86) executable, you can perform a profile with Dependency Walker, meanwhile, use fuslogvw.exe tool to log assembly binding failures.

---

Eric Yang [MSFT]
MSDN Community Support | Feedback to us
Get or Request Code Sample from Microsoft
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 2

Hi Eryang

Thanks for the reply. I tried to log the assembly binding failures using fuslogvw but it is showing an empty list always. Below is the output from WinDBG

Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

CommandLine: "C:\Program Files (x86)\Autodesk\SSA 2012\Bin\SSA_STMServer.exe"
Symbol search path is: *** Invalid ***
****************************************************************************
* Symbol loading may be unreliable without a symbol search path.      *
* Use .symfix to have the debugger choose a symbol path.          *
* After setting your symbol path, use .reload to refresh symbol locations. *
****************************************************************************
Executable search path is: 
ModLoad: 00000000`01390000 00000000`013c0000  SSA_STMServer.exe
ModLoad: 00000000`77760000 00000000`7790c000  ntdll.dll
ModLoad: 00000000`77940000 00000000`77ac0000  ntdll32.dll
ModLoad: 00000000`75440000 00000000`7547f000  C:\Windows\SYSTEM32\wow64.dll
ModLoad: 00000000`753e0000 00000000`7543c000  C:\Windows\SYSTEM32\wow64win.dll
ModLoad: 00000000`753d0000 00000000`753d8000  C:\Windows\SYSTEM32\wow64cpu.dll
(744.234): Break instruction exception - code 80000003 (first chance)
*** ERROR: Symbol file could not be found. Defaulted to export symbols for ntdll.dll - 
ntdll!CsrSetPriorityClass+0x40:
00000000`77810fb0 cc       int   3
0:000> g
ModLoad: 00000000`77540000 00000000`7765f000  WOW64_IMAGE_SECTION
ModLoad: 00000000`757e0000 00000000`758e0000  WOW64_IMAGE_SECTION
ModLoad: 00000000`77540000 00000000`7765f000  NOT_AN_IMAGE
ModLoad: 00000000`77660000 00000000`7775a000  NOT_AN_IMAGE
ModLoad: 00000000`75380000 00000000`753ca000  C:\Windows\SysWOW64\MSCOREE.DLL
ModLoad: 00000000`757e0000 00000000`758e0000  C:\Windows\syswow64\KERNEL32.dll
ModLoad: 00000000`774f0000 00000000`77536000  C:\Windows\syswow64\KERNELBASE.dll
ModLoad: 00000000`75e10000 00000000`75e9f000  C:\Windows\syswow64\OLEAUT32.dll
ModLoad: 00000000`75900000 00000000`75a5c000  C:\Windows\syswow64\ole32.dll
ModLoad: 00000000`77180000 00000000`7722c000  C:\Windows\syswow64\msvcrt.dll
ModLoad: 00000000`76fd0000 00000000`77060000  C:\Windows\syswow64\GDI32.dll
ModLoad: 00000000`773f0000 00000000`774f0000  C:\Windows\syswow64\USER32.dll
ModLoad: 00000000`75ea0000 00000000`75f40000  C:\Windows\syswow64\ADVAPI32.dll
ModLoad: 00000000`757c0000 00000000`757d9000  C:\Windows\SysWOW64\sechost.dll
ModLoad: 00000000`75510000 00000000`75600000  C:\Windows\syswow64\RPCRT4.dll
ModLoad: 00000000`754b0000 00000000`75510000  C:\Windows\syswow64\SspiCli.dll
ModLoad: 00000000`754a0000 00000000`754ac000  C:\Windows\syswow64\CRYPTBASE.dll
ModLoad: 00000000`75600000 00000000`7560a000  C:\Windows\syswow64\LPK.dll
ModLoad: 00000000`75720000 00000000`757bd000  C:\Windows\syswow64\USP10.dll
ModLoad: 00000000`6e6f0000 00000000`6e7c1000  C:\Windows\SysWOW64\MSVCR100.dll
ModLoad: 00000000`6e570000 00000000`6e641000  C:\Windows\SysWOW64\MSVCR100.dll

Here I get the message box showing the error

ntdll!ZwTerminateProcess+0xa:
00000000`777af97a c3       ret
0:000> g
    ^ No runnable debuggees error in 'g'

 

Thanks

---

Bimal

Answer 3

To let the 64x bit OS run the 32bit DLLs as needed, you should make sure that the application build platform is x86 and the platform target is x86.

 

To find those you should go to the application properties, and then at the build  tab you'll find them.

To Create new platform with x86, you have to locate the platform combo box beside the "Start Debugging" or "Play" or "RUN" button, and select the "configuration manager" from it.

 

Hope this will help,

Regards,

Jimmy.

---

Wassouf