Portable Download Microsoft Jet Oledb 4.0

This allows the 64-bit IIS process to launch a 32-bit worker process that does have access to Jet 4.0 (since the driver exists in the SYSWOW64 folder).

You may need to download Microsoft Jet OLE DB 4.0 if: download microsoft jet oledb 4.0

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\db.mdb; This allows the 64-bit IIS process to launch

was a 32-bit-only database driver, millions of developers running legacy Visual Basic or ASP.NET applications on newer 64-bit operating systems encountered the dreaded error: was a 32-bit-only database driver

Microsoft Access Database Engine 2010 Redistributable Alternative (newer): Microsoft Access Database Engine 2016 2. Fixing the "Not Registered" Error