Download Microsoft Jet Oledb 4.0 _verified_

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.

32-bit (x86) only. It has no native 64-bit version.

Once you have installed the correct ACE provider (matching your application's bitness), you must change the "Provider" part of your connection string:

The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.

It was the standard for Windows 2000, XP, and Vista era applications. download microsoft jet oledb 4.0

This is the most critical step. Do not change your provider without updating your code.

If you are maintaining an older software system, building legacy database tools, or troubleshooting an "OLEDB 4.0 provider is not registered" error, this guide will help you understand how to safely acquire and configure this component. What is Microsoft Jet OLEDB 4.0?

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

To directly answer the core question: The component is an integral, 32-bit-only part of the Windows operating system. Attempting to force it to work in modern 64-bit environments is an exercise in frustration. These downloadable files are

Microsoft Jet OLEDB 4.0 was the database engine that allowed applications to read and write to:

This forces the app to run in 32-bit mode using the 32-bit Jet driver available in Windows WOW64.

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\data\db.mdb;

The Microsoft Jet OLEDB 4.0 provider is significant for several reasons: For the security and stability of your system,

if you are forced to maintain legacy code that explicitly demands Microsoft.Jet.OLEDB.4.0 .

: Microsoft never released a native 64-bit version of the Jet OLEDB 4.0 provider.

If your environment is correctly configured for 32-bit execution, use the following standard connection strings to connect to your data sources. For Microsoft Access (.mdb):