Microsoft.jet.oledb.4.0 Download For Windows Server 2012 R2 __hot__ (2024)

This allows the 64-bit server to run your code in a 32-bit "sub-process," making the native Jet 4.0 driver accessible. Troubleshooting Common Errors "The 'Microsoft.Jet.OLEDB.4.0' provider is not registered"

Must target the x86 platform for desktop apps. microsoft.jet.oledb.4.0 download for windows server 2012 r2

The driver exists at C:\Windows\SysWOW64\msjet40.dll . Application Pool: Must be set to 32-bit mode for web apps. This allows the 64-bit server to run your

Windows Server 2012 R2 is a 64-bit (x64) operating system. The Microsoft.Jet.OLEDB.4.0 provider is strictly a 32-bit component. This creates a "bitness" mismatch: A 64-bit application cannot load a 32-bit OLEDB provider. Application Pool: Must be set to 32-bit mode for web apps

If you are running Windows Server 2012 R2, you have likely discovered that this provider is not always active or compatible by default due to the shift toward 64-bit architecture. Understanding the 64-Bit Conflict

💡 Microsoft Jet 4.0 will never work in a native 64-bit process. You must either force your app to 32-bit or upgrade to the ACE provider.

Migrate connection strings from Microsoft.Jet.OLEDB.4.0 to Microsoft.ACE.OLEDB.12.0 (requires the Access Database Engine download).