Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\path\to\database.mdb;Jet OLEDB:Database Password=MyPassword; download microsoft jet oledb 4.0
If your application complains that the provider is not registered, it is almost always a , not a missing file. Legacy OS and Database Engines
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If you control the source code of the application, change the compilation target. Open your project in . Go to Project Properties > Build . Change the Platform Target from "Any CPU" or "x64" to x86 . Run this PowerShell script as Administrator to confirm
Right-click your project in the and select Properties . Go to the Build tab. Change the Platform target from Any CPU to x86 . Rebuild your project. Method B: Upgrade to the ACE Provider
The Microsoft Jet OLEDB 4.0 provider is a legacy database component used to connect applications to older Microsoft Access ( .mdb ) and Excel ( .xls ) files. , as it has been a built-in component of the Windows operating system since Windows 2000.
Microsoft Jet (Joint Engine Technology) 4.0 was designed as a general-purpose database engine for 32-bit environments.
Go to your Application Pools, select the pool your app uses, click Advanced Settings , and set Enable 32-Bit Applications to True .
: If creating a Universal Data Link (UDL) file, you must open it with the 32-bit oledb32.dll located in C:\Windows\syswow64 Stack Overflow 3. Modern Alternative: Microsoft ACE Microsoft.Jet.OLEDB.4.0 by default on Windows?
