Hot! Download Microsoft Jet Oledb 4.0 Jun 2026

These downloadable files are . Instead, they are usually a repackaged version of the 64-bit Access Database Engine (ACE Provider) from an unofficial source. Microsoft does not host or support these downloads. For the security and stability of your system, it is always best to obtain the latest and official ACE provider directly from Microsoft's website.

Understanding and Downloading Microsoft Jet OLEDB 4.0: A Complete Guide

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.

Do not attempt to "download" Jet OLEDB 4.0. Instead, install the Microsoft Access Database Engine 2016 Redistributable and change your connection string from Jet.OLEDB.4.0 to ACE.OLEDB.12.0 or ACE.OLEDB.16.0 . This will work on Windows 10/11, Server 2016+, and future OS versions. download microsoft jet oledb 4.0

Provider=Microsoft.ACE.OLEDB.16.0;Data Source=C:\myFolder\myDb.accdb;

For web applications running under IIS, you can achieve a similar effect by enabling the "Enable 32-bit Applications" setting for your application pool in the IIS advanced settings. This forces the entire web application to run as a 32-bit process.

If you have Microsoft Office (any version) installed, the bitness of the Office installation must match the bitness of the Access Database Engine. You cannot install 64-bit ACE drivers if you have 32-bit Office (and vice versa). You may need to use the /quiet installer switch with the ACEOLEDB.DLL to force side-by-side, but that is an advanced scenario. These downloadable files are

Windows has been 64-bit primarily for over a decade. The original Jet OLEDB 4.0 is . A 64-bit application running on modern Windows cannot load a 32-bit in-process provider. Microsoft never released a native 64-bit Jet 4.0.

Most users today are on Windows 10 or 11. If you need to interact with .mdb files on a modern system, you should not try to hunt down the old Jet files. Instead, use the official replacement provided by Microsoft: the .

If you have a 32-bit application and a 64-bit Windows machine, you do not need a new download; you need to change how the application runs. Fix 1: Configure App as 32-bit Open your project in Visual Studio. Go to > Build . Change Platform Target to x86 (not "Any CPU"). Rebuild the application. Fix 2: Run in 32-bit Mode For the security and stability of your system,

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

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