Download the Microsoft Access Database Engine Redistributable from the official Microsoft Download Center.
Microsoft recommends using the instead of Jet for modern applications. The ACE provider is backwards-compatible with older .mdb files and supports both 32-bit and 64-bit systems.
I can provide step-by-step instructions to get your connection working. Share public link download microsoft jet oledb 4.0
Go directly to Microsoft Download Center and search for:
If you still need the actual Jet 4.0 redistributable for an air-gapped legacy system, search for on an archive site (but understand the security risks). I can provide step-by-step instructions to get your
If you are developing or compiling the application yourself (e.g., in Visual Studio): Open your project properties. Navigate to the or Compiler settings. Change the Platform Target from "Any CPU" or "x64" to x86 .
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\MyData.mdb; New (ACE 12.0 or 16.0): Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\MyData.mdb; or Provider=Microsoft.ACE.OLEDB.16.0;Data Source=C:\MyData.mdb; Navigate to the or Compiler settings
For 64-bit Windows 7/8/10, the 64-bit Jet driver is part of but not installed by default.
The is a database engine upon which several Microsoft products have been built, including Microsoft Access and Visual Basic. Jet OLEDB 4.0 is the specific provider used to connect to these databases. Technology: 32-bit only. Purpose: Read/Write Access .mdb files. Status: Obsolete (Replaced by ACE).
: The Jet OLEDB 4.0 provider was never released as a 64-bit component Stack Overflow Windows Built-in : It is already present in your system's C:\Windows\SysWOW64\ msjet40.dll on 64-bit Windows systems Stack Overflow Deprecated : Microsoft recommends using newer alternatives like Microsoft SQL Server Express for modern development Microsoft Community Hub How to Fix "Provider Not Registered" Errors
Understanding Microsoft Jet OLEDB 4.0: Download, Installation, and Troubleshooting Guide