Microsoft oledb jet 4.0 is not installed on local machine

Go to the project's properties and change the platform target to x86.

Microsoft wants to eliminate support of some (not all) databases so they announced they will not be supported by 64-bit Windows. Customers haved complained so much that they are now providing support. You can find the interfaces and use them but they do not come with 64-bit Windows. The alternative is to just make your program 32-bit and that is done by making the platform target x86.