To use the Microsoft.ACE.OLEDB.12.0 provider, you'll need to download and install it on your system. Here are the steps:

If you absolutely must have both architectures on a production server, run the 64-bit installer first with /quiet , then the 32-bit installer with /passive . Test thoroughly with your ETL processes.

You can download the Microsoft.ACE.OLEDB.12.0 provider by installing the Microsoft Access Database Engine 2016 Redistributable

Try connecting to your first Excel file using the connection string in SSMS or your preferred IDE. Good luck

Microsoft has moved many legacy downloads, but the installers are still available through the Microsoft Download Center . AccessDatabaseEngine_X64.exe 32-bit Version: AccessDatabaseEngine.exe 🛠️ How to Install Both (Side-by-Side)