Windows 7 : C# Error:'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine


Today I have faced this error when try to use MS Access database from SMS software. After goggling I have found the solution in ...
MSDN forum


The behavior you described is expected. If your application runs in 64-bit mode, all of the components it uses must also be 64-bit. There is no 64-bit Jet OLE DB Provider, so you get the message described. You would receive a similar error when trying to connect to a database using OLE DB or ODBC if there is no 64-bit version of the specified OLE DB provider or ODBC driver.
This problem only occurs in applications that run in 64-bit mode. Compiling the application so it runs only in 32-bit mode is the best current solution.

How to compile application to run in both 32 bit or 64 bit?
You can do it several ways...

Solution :1

You can edit your visual studio c# project file (.csproj) and put this snippet:
2.<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

Solution :2
Using CorFlags to set the 32BIT flag on the executable. E.g:
corflags.exe myapp.exe /32BIT+

This will modify your exe, so you might wanna keep a backup just in case. You can also revert the flag using /32BIT- instead of /32BIT+.

Solution :3(Simplest way)
1.Right click your Project, and select Properties.
2.In properties, select the Build tab. Under Platform target, select x86.
3.Hit Ctrl+Shift+S to save all files, right click the Solution and select "Clean" to get rid of old binaries. Any builds after that should be 32 bit .
Now it is ready for both 32 bit and 64 bit OS.

This should solve the problem ! Please inform me if there is another better way.


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