Download Microsoft Jet Oledb 4.0 May 2026

Microsoft has never distributed the Jet OLEDB 4.0 provider as a standalone downloadable installer (like an .exe or .msi file named "Jet40Setup.exe"). This is the most common misconception.

How Jet 4.0 actually gets installed on your computer:

Therefore, if you are on Windows 10 or 11 and you type regedit to search for Microsoft.Jet.OLEDB.4.0, you will likely find it missing.

If you are trying to connect an older application (like a VB6 project or a classic ASP website) to a Microsoft Access database, you have likely encountered an error stating that the Microsoft Jet OLEDB 4.0 provider is not registered. download microsoft jet oledb 4.0

This is a common issue for developers and IT professionals maintaining legacy software. However, simply "downloading" this driver is no longer straightforward due to Microsoft’s support policies. This article explains where to get the files, the compatibility pitfalls, and the modern alternatives you should use instead.

This is the official replacement for Jet OLEDB 4.0. It supports:

Where to download: Go directly to Microsoft Download Center and search for: Microsoft has never distributed the Jet OLEDB 4

"Microsoft Access Database Engine 2016 Redistributable"

Or use this direct link pattern (ensure it points to microsoft.com): https://www.microsoft.com/en-us/download/details.aspx?id=54920

Connection string example (modern replacement): Therefore, if you are on Windows 10 or

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Data\Northwind.mdb;Persist Security Info=False;

Before doing anything, verify the driver exists on your system.

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myDb.mdb;Persist Security Info=False;

or for newer ACE 16.0:

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

ACE supports both .mdb (Jet 4.0) and .accdb files, and works with OLEDB (though connection strings differ).

Download:

Installation notes: