I try to run Console Application that connects to Microsoft Access Database on the Windows 2008 server x64 and have this error:
Class not registered
at ADOX.CatalogClass.Create(String ConnectString)
All works fine on the Windows XP x86.
Thanks
ADOX COM component is only available for x86 systems. This means that it cannot be used on code that is generated for the x64 platform. A possible solution is to explicitly set the target processor in the Visual Studio project to x86.
For fixing this bug, application should be compiled for x86 CPU. And after that it will run on the x64 platform as a x86 app.
I find the solution for this bug after google it.
The problem is due to JET. JET doesn't have support for 64-bit. To fix this we changed App Pool configuration from 64-bit to 32-bit. That was all to fix this. Apparently, exception information is misleading.
Application Pools->Select Your Application Pool-> Advanced Setting->Enable 32-Bit Applications ->True
After done this, it is working correctly.
Related
I've currently used the System.Data.SQLite DLL in a .NET 4.0 x86 WinForms app. This is causing an issue on one of my client's PCs although I cannot reproduce this bug on my system. Both systems are 32bit Windows 7. How do I solve this? Things I've tried:
Installing .NET 4.0 (the app is .NET 4)
Installing all possible VC++ Runtime versions from 2005 to 2012
Installing this particular VC++ Runtime that SQLite needs (fixed a similar issue on my PC)
Adding the useLegacyRuntime attribute in the app.config XML
The error looks wierd because my app is obfuscated. The app works on my 32-bit PC and on my 64-bit development PC. It fails on a client machine. What can I do to solve this error?
In your project, solution explorer expands the Reference section and right click System.Data.SQLite then open properties, in the properties window, make sure copy local is set true . After that rebuild your project and run your client machine again
Turns out my SQLite DLL was outdated. I downloaded the latest from here and rebuilt my app with it. It worked on my PC as well as the client's. I had to install VC++ Runtime 2005 x32 on the Client Machine as well.
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 have a standalone application used for CRON that I deployed to a Windows Server 2008 machine that keeps giving me the error below.
System.InvalidOperationException: The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.
I did some research on the subject and it seems a 64 bit application does not work with the MSJet dll for 64bit. So the solution was to recompile the application and have it targeted for a 32bit machine, however I cannot do that in my project. I looked the in the C:\Windows\SysWOW64 folder and found both the msjet40.dll and msjetoledb40.dll files. Is there any other way I can run this application as is or maybe in a compatibility setting since I cant target it to 32 bit when I build it.
You cannot use msjet40.dll or msjetoledb40.dll if your application is a 64-bit process. You will have to use the ACE OLEDB 12.0 which is the only real alternative that supports 64-bit process. Your only other option is to compile the application as a 32-bit process.
You can download this driver from: Microsoft Access Database Engine 2010 Redistributable and if you are looking for additional information you can find it here
I have installed the 'Microsoft Access Database Engine 2010 Redistributable' as described in the blog entry
http://danielcai.blogspot.com/2011/02/solution-run-jet-database-engine-on-64.html
and it works in my windows-forms application. I now want to add some unit-tests and when running the unit-test I get the above error. I have checked my references but can't seem to figure out why it works in the application and not in the unit-test.
I'm working in VS2010 on a windows 7 ultimate x64 installation.
Can someone please help me ?
The Target Platform is probably set to Any CPU, which means when you run it from VS or in your 64-bit Windows it will execute as 64-bit code (and use the 64-bit Jet driver). But a typical unit test runner is executing in 32-bit mode and all assemblies it loads will then execute in 32-bit mode (since your project target platform is Any, ie either 32 or 64 bit). And Windows 7 does not come with a 32-bit Jet driver by default.
I create application in visual studio 2010.
I tested on server 2003 r2 x64 and the program does not start.
trying to compile x64 and I crash exception
Error while Trying to run Project:
Debugger cannot start: The assembly to
be debugged was built with platform
incompatible with the current system
If your application references 32-bit .dll-files it can't run as 64-bit. Either .Net assemblies compiled to x86-target (which is default now), or P/Invoke on native Windows .dll-files, will prevent you from running your 64-bit app.
The Windows installation you are running this on also needs to be 64-bit in order for it to handle 64-bit debugging. (Note: Compiling to 64-bit will work fine!)
Set target CPU type to x86 in project properties (under Build) to make it work. If you don't reference any external 32-bit .dll's you can set it to "any" to let .Net decide. It will then run 64-bit mode on 64-bit operating systems and 32-bit mode on 32-bit operating systems.
I'm not sure about VS2010, but for VS2005 I build with "Mixed Platforms" set for "Active solution platform."