Download Microsoft.ace.oledb.12.0 Provider For Both 64-bit [updated] 【2026 Release】

Ensure your connection string specifies the correct provider: Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\path\to\file.xlsx;Extended Properties="Excel 12.0 Xml;HDR=YES";

Although Windows Server 2016 is not officially listed on the download page, the 64‑bit installer has been confirmed to work successfully on that OS.

Using the provider in an unsupported scenario can lead to unpredictable behavior, memory leaks, and process deadlocks. download microsoft.ace.oledb.12.0 provider for both 64-bit

While there are newer versions of this driver (specifically the ), the 2010 version (ACE 12.0) remains the most widely used standard because it installs cleanly on most Windows Server environments and works perfectly with the 12.0 connection string syntax.

Both installers contain the necessary OLE DB drivers to make the Microsoft.ACE.OLEDB.12.0 provider available on your 64-bit system. Both installers contain the necessary OLE DB drivers

If you are working with newer file formats or facing persistent issues, it is recommended to use the .

New-Object -ComObject "ADODB.Connection" $conn = New-Object System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\test.xlsx;Extended Properties='Excel 12.0 Xml;HDR=YES'") $conn.Open() Write-Host "Provider is registered and working" -ForegroundColor Green $conn.Close() If that occurs, try using the /quiet flag instead

Note: Some users have reported that this method still triggers an “incompatible” dialog. If that occurs, try using the /quiet flag instead.

By default, Windows prevents installing 64-bit drivers if 32-bit Office (or vice versa) is present. You can bypass this using a "quiet" installation command. 1. Download the Installer

(Excel). Below is an in-depth review of its performance, utility, and common implementation challenges. 1. Connectivity and Versatility This provider is essential for developers using SQL Server (SSIS) , or custom .NET applications