I am developing a C# program with visual studio that makes use of the sql compact library. On the developing computer everything works like a charm but on my home computer that has an almost fresh win8 installment I get a System.BadImageFormatException: is not a valid win32 program and I have no clue why.
I have added the Microsoft.SqlServer.Compact package with nuget. this package includes the System.Data.SqlServerCe.dll.
I have also seen on my development computer in the output window of visual studio that the System.Data.SqlServerCe.dll is loaded from GAC. Since my home computer has a fersh win8 installment it does not have the System.Data.SqlServerCe.dll in its GAC but since I have added the Microsoft.SqlServer.Compact package with nuget that should not be problem right?
The problem is probably that your program or one of it's dependancies is 64 bit and you are running it on a 32-bit computer. Go to the project properties, and set the "platform target" to either "Any CPU" or "x86" if you are planning to run it on 32-bit systems.
Related
We have a C# application in which we are using CefSharp.Core.dll, CefSharp.dll and CefSharp.Winforms.dll and application build was x64 and everything was working fine for 64-bit systems. But now one of our clients requested application to run on 32-bit Systems. I have tried everything but all in vain. Installed CefSharp (57.0) from nuget C++ redistributable is also installed as I have mentioned that application is working fine if I change project build to x64. Don't know what I'm missing. Also tried these solutions "https://github.com/cefsharp/CefSharp/issues/1714".
Alright, i got the solution. Posting it as a solution so that it can help others in future. The mistake was i had multiple projects in a solution and I was changing only project's build to (32-bit i.e x86) but was not changing solution's platform build and deploy. Right Click Solution->Properties->configuration-> and Changed build to x86 worked for me.
I use SQLite and works fine on the developer machine (or machine with Visual Studio).
But it does not work on PCs without VS. I "installed" the SQLite manually (32 bit version, added to the references, Copy Local: True). I get "System.IO.FileNotFoundException" System.Data.SQLite.dll exception.
The System.Data.SQLite.dll is in the output folder.
But I can not get it to work only if I install the SQLite with this: https://system.data.sqlite.org/downloads/1.0.105.2/sqlite-netFx46-setup-bundle-x86-2015-1.0.105.2.exe
Dev PC: x64 Win 10, application: x86 only
Please let me know if you need any other information.
Check which dependencies has your executable file (and, maybe, System.Data.SQLite.dll) with Dependency Walker or similar program. Then put these libraries you found into executable's folder one by one, until your executable will work.
You need to make sure the 64 bit C++ runtime DLLs are getting installed. They'll often be on the developer's system but not as often installed by your installer on the target system. Even though this is a .NET assembly, it appears to have C++ underpinnings.
I am having a similar problem.
I have developed a c# app that is Pinvoking a dll which is dependent on some other dlls. On dev machine it is working fine. Even when i copy the debug folder, which contains all the dlls and exe file, to a different location it works fine.
When I copy the same folder to another machine, it gives the dll not found exception.
The interesting thing is that the error message gives a path to the code file present on the dev machine. Not sure how this information is known at the target machine?
I have tried both the debug and release versions, but release version just crashes, and the debug version gives the exception message.
I have tried the dependency walker but could not figure out if there is any missing dependent dll causing the error.
I have tried to install VC++ run time redistribution package as well but it did not work.
I am using VS2013 on Win 7 64bit on dev machine. The target is Win 7 64bit.
Dlls are related to tesseract OCR and copied from here.
As title suggests I am compiling C# app using VS 2012 on a 64-bit machine. I would like the program being built to run on a 32-bit machine.
Right now the only help I found online was for:
Menu>Build>Configuration>
Active Solution Platform defaulted to Any CPU, and I tried that but didn't work on 32-bit machine (unless I did something wrong)
Tried Add a new one to the Debug configuration for platform x86 with build checked
Compiled and ran the app on 32-bit machine getting error A.exe is not a valid Win32 application.
My above was similar to what was done here: Link to Stack Overflow Similar Question
UPDATE 1:
The target OS is WinXP SP3 but we dont believe it has .NET 4.5 on it. I will be testing to see if compiling earlier ver of the app in .NET 4.0 will solve the problem and fix the problem. The problem may not be what the error message is displaying.
Setting your project to target AnyCPU should allow it to run on a 32bit machine, provided you aren't using a library which loads 64bit native code. If you have any dependencies, you'll need to make sure to use AnyCPU or 32-bit versions of those dependencies, as well. Also, make sure you have the proper .NET Framework installed on the 32bit machine (.NET 4.5 by default, if you're using VS 2012 with a new project).
Note that the default in VS 2012 for new projects is AnyCPU, with the Prefer 32 Bit option checked. This will cause it to always run as a 32bit application, even on your 64bit OS.
Note that, since your friend is running XP sp3, you can't use .NET 4.5. .NET 4.5 is not supported on Windows XP. You will need to change your application to target .NET 4.0, which will then work on the XP machine (if he installs the 4.0 framework).
That error is the Win32 error ERROR_BAD_EXE_FORMAT. It's generated by the loader and is what happens when you try to run a 64 bit process on a 32 bit operating system. There are other ways to see that error, but this is by far the most common reason for it to occur on a .exe file.
To compile a 32 bit process you need to target x86 in your project configuration. Another alternative would be to target AnyCPU. That will result in a 32 bit process when executed on a 32 bit OS, and a 64 bit process when executed on a 64 bit OS. It would appear that your build targets x64.
The Platform name (shown on the top of the properties, page "Build") is only a name. The same for "Active Solution Platform" in configuration editor. This is a bit confusing.
You have to make sure that the "Target platform" setting is really set to "AnyCPU" or "x86".
I had same problem. I strugle with it. and the and I found a solution.
The solution is :
Firstly choose platform target "x86". After that build your project as "release mode" not "Debug mode". finally you can run on any platform (32 bit or 64 bit).
If none of the solutions presented above helped you, then try the following:
Open the project properties and click General in the left column.
Change Platform Toolset to the one with Windows XP in it.
For example, in Visual Studio 2015 it will default be set to "Visual Studio 2015 (v140)". To be able to run on Windows XP, you have to change this to "Visual Studio 2015 - Windows XP (v140_xp)".
Now do a full rebuild, and the exe should work on Windows XP.
I compiled my executable that used the Access Database Engine libraries on Windows XP 32bit.
Running that on the Win7 x64 OS gave me an error that the OLEDB components were not registered.
I tried to install the AccessDatabaseEngine x64 and it fixed the problem.
However on another machine with Win7 x64 and office 2007 32bit installed, it wouldn't let me install the AccessDatabaseEngine x64 and so I was left to compile the project on that target machine (in VS2010 c#) with the Env as x64 and target CPU as x86. This fixed the problem.
My question is, why does this work? What's the reasoning behind this?
Thanks.
The answer your question what you are stating means that there for one is a different OS but should not matter.. the real issue here is that there are 2 different versions of Microsoft Installed.. you would have to either
GAC the version or Reference the version of the Target Machine
Set Copy Local of the .DLL in the working version to the Target version.. sort of like where your DLL's would reside in the Debug/Bin or Debug/Release folder where the bin folder resides..
I am working on Windows 7 64 bit and copied my working dll's over to a Windows 2003 server machine and my projects still work..
my other work around was to reference the Microsoft.Interop.Access .dll's from the Target machine into my Solution, recompile and Bam....!