Download Microsoft Jet Oledb 4.0 Extra Quality -

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;User Id=admin;Password=; Use code with caution. Modern ACE Connection String (32-bit and 64-bit)

Warning: This violates Microsoft’s EULA and creates security risks. You would need to copy msjet40.dll , msjter40.dll , msjint40.dll , and the OLEDB DLLs from a working Windows 7 32-bit system into your SysWOW64 folder and register them. Do not do this in a production environment.

To summarize:

: If creating a Universal Data Link (UDL) file, you must open it with the 32-bit oledb32.dll located in C:\Windows\syswow64 Stack Overflow 3. Modern Alternative: Microsoft ACE Microsoft.Jet.OLEDB.4.0 by default on Windows?

After installing the Access Database Engine Redistributable, verify that the provider is correctly registered: download microsoft jet oledb 4.0

If you landed here looking for a direct "Download" button for , you might be frustrated. Here’s the honest truth: You cannot download Jet 4.0 as a standalone, redistributable package anymore.

If your environment strictly requires a 64-bit architecture, you must abandon the JET provider and upgrade to the Microsoft Access Database Engine (ACE) provider. Provider=Microsoft

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\data\db.mdb; Summary of Connection Strings

There are two main flavors of the ACE provider, and both are readily available: Do not do this in a production environment

: Configure your application to run in 32-bit mode (x86) rather than "Any CPU". Use 32-bit UDL