Download [updated] Microsoft.ace.oledb.12.0 Provider For Both 64-bit -

To obtain the Microsoft.ACE.OLEDB.12.0 provider for a system, you must download and install the Microsoft Access Database Engine Redistributable

. While newer versions (like 2016) exist, the specific "12.0" provider is most reliably found in the redistributables. Data Savvy Download Links Access Database Engine 2016 (Recommended) : Available at the Microsoft Download Center accessdatabaseengine_X64.exe for the 64-bit version. Microsoft 365 Access Runtime : A modern alternative available through the Microsoft Support Page . It is downward compatible with OLEDB.12.0 connection strings. Review: Microsoft.ACE.OLEDB.12.0 (64-bit) Microsoft.ACE.OLEDB.12.0

provider is the industry-standard bridge for connecting applications to Office data formats, specifically (Access) and

(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

to read from modern Excel or Access files. Unlike the older "Jet" engine, which was strictly 32-bit, the ACE provider supports the 64-bit architecture required by modern servers and enterprise software. SQLServerCentral Key Strength

: It handles complex Excel data types and large Access databases that the legacy Jet.OLEDB.4.0 cannot process. 2. Installation Hurdles ("The Bitness Conflict") Download and install Microsoft 365 Access Runtime

To install the Microsoft.ACE.OLEDB.12.0 provider for both 32-bit and 64-bit architectures on the same machine, you must use a specific command-line workaround. By default, Microsoft prevents side-by-side installations of different bitnesses of the Access Database Engine. 1. Download the Installers

Although Microsoft has removed some direct 2010 version links, you can typically use the Microsoft Access Database Engine 2016 Redistributable, which still provides the Microsoft.ACE.OLEDB.12.0 provider for backward compatibility.

Download Page: Microsoft Access Database Engine 2016 Redistributable. Files to select: accessdatabaseengine.exe (32-bit) accessdatabaseengine_X64.exe (64-bit) 2. Side-by-Side Installation Steps download microsoft.ace.oledb.12.0 provider for both 64-bit

If you already have one version installed (e.g., 64-bit Office), a standard installation of the other will fail. Use the following "passive" installation method to bypass this restriction: Open Command Prompt as an Administrator.

Run the Installer with the /passive switch. For example, to force the 64-bit installation while 32-bit is present, navigate to your download folder and run: accessdatabaseengine_X64.exe /passive.

(Note: Use accessdatabaseengine.exe /passive if you are forcing the 32-bit version).

Registry Fix (Crucial step): After installation, you may need to delete a registry key to prevent Office configuration errors.

Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\Common\FilesPaths Delete or rename the mso.dll value. 3. Verify the Installation

To confirm both providers are correctly registered, you can use a simple UDL (Universal Data Link) test: Right-click on your desktop, select New -> Text Document.

Rename the file to test.udl (ensure file extensions are visible). Double-click the file to open Data Link Properties.

Check the Provider tab for Microsoft Office 12.0 Access Database Engine OLE DB Provider. To obtain the Microsoft

For developers, note that Visual Studio 2022 is a 64-bit application and will only see the 64-bit drivers in its design-time environment.

Downloading the Microsoft.ACE.OLEDB.12.0 provider for both 32-bit and 64-bit environments can be tricky because Microsoft's standard installers usually block you from having both bitnesses on the same machine. 1. Official Download Links

The "Microsoft.ACE.OLEDB.12.0" provider is part of the Microsoft Access Database Engine Redistributable. While older 2010 versions are harder to find on official landing pages, the 2016 Redistributable is the current standard and provides the updated OLEDB 16.0 driver, which often maintains compatibility with 12.0 connection strings.

Official 2016 Engine: Available at the Microsoft Download Center. You can choose between AccessDatabaseEngine.exe (32-bit) and AccessDatabaseEngine_X64.exe (64-bit).

Legacy 2010 Engine: If you specifically need the 12.0 version, some community members host archived links through platforms like Chocolatey or the Wayback Machine. 2. How to Install Both (Side-by-Side)

Microsoft generally prevents installing a 64-bit engine if 32-bit Office is present (and vice versa). To bypass this, you must use the command line with a specific flag:

To download the Microsoft ACE OLEDB 12.0 provider (the Access Database Engine) for 64-bit systems, follow the links below.

Important: The same installer works for the 64-bit provider, but you must ensure you use the correct version. Identify the bitness of the application that will

Option 1: The Correct Download (Recommended)

Microsoft has replaced the standalone "AccessDatabaseEngine.exe" with the Microsoft Access Database Engine 2016 Redistributable.

This installer works for ACE 12.0 (Office 2007), ACE 14.0 (Office 2010), and ACE 16.0 (Office 2016). For compatibility, most systems accept "12.0" as a valid ProgID even with the 2016 engine installed.

The Ultimate Guide: How to Download & Install Microsoft.ACE.OLEDB.12.0 Provider for Both 32-bit & 64-bit

Conclusion: Your Action Plan

To successfully download Microsoft.ACE.OLEDB.12.0 provider for both 64-bit and 32-bit, follow this checklist:

Identify the bitness of the application that will call the provider.
Download the correct redistributable from Microsoft’s official site (link ID 54920).
- Use AccessDatabaseEngine_x64.exe for 64-bit apps.
- Use AccessDatabaseEngine.exe for 32-bit apps.
Install as Administrator.
Test with the PowerShell script provided above.
If you truly need both on one machine, use the /passive workaround — but prefer separate environments.

The error “Microsoft.ACE.OLEDB.12.0 provider is not registered” is completely solvable. By matching bitness and using the official Microsoft downloads, you can restore full Office file access to your applications within minutes.

Last Updated: October 2024
Microsoft Product Support Lifecycle: The ACE.OLEDB.12.0 provider remains supported as part of the Access Database Engine 2016 Redistributable, which is currently in extended support until October 14, 2026.

Need help with a specific error? Leave a comment below (or contact your system administrator with the exact error code).

You can install the Microsoft Access Database Engine Redistributable which provides the Microsoft.ACE.OLEDB.12.0 provider for both 32-bit and 64-bit.

Links to download:

Microsoft Access Database Engine 2010 Redistributable — choose the appropriate file:
- 32-bit installer: AccessDatabaseEngine.exe
- 64-bit installer: AccessDatabaseEngine_x64.exe

Notes:

Do not install 32-bit and 64-bit Office components side-by-side; match the bitness of the Access Engine to your Office installation.
If you have 32-bit Office installed but need the 64-bit engine (or vice versa), use the passive install workaround:
- Run the installer from an elevated command prompt with the /passive switch (e.g., AccessDatabaseEngine_x64.exe /passive).
For new projects consider the newer Microsoft Access Database Engine 2016 Redistributable if compatibility permits (provides newer drivers).

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