To use the JET provider in your application, you must format your connection string correctly. Here are the most common implementations. Connecting to Microsoft Access (.mdb)
Available in both accessdatabaseengine.exe (32-bit) and accessdatabaseengine_X64.exe (64-bit). 2. Microsoft 365 / Access Runtime
Fix 2: Enable 32-Bit Applications in IIS (For Web Developers) download microsoft jet oledb 4.0
Method 2: Upgrade to the Microsoft Access Database Engine (ACE)
If you have installed, your system already has the 64-bit ACE drivers. However, if you are running a 32-bit application (like an old VB6 app or a 32-bit IIS Application Pool) and try to use the ACE driver, it will fail because it tries to load the 64-bit driver into a 32-bit process. To use the JET provider in your application,
It supports modern Access formats ( .accdb ) and modern Excel formats ( .xlsx ), as well as the older legacy formats ( .mdb and .xls ).
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\mydatabase.mdb;Persist Security Info=False; Use code with caution. It supports modern Access formats (
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;
If you still need Jet OLEDB 4.0 (for a 32-bit app on a supported OS), follow these steps.
Always enforce on applications utilizing Jet 4.0.
